Show HN: Python Simulator of David Deutsch’s "Constructor Theory of Time" Hi HN, I turned the freshly published paper “The Constructor Theory of Time” by David Deutsch and Chiara Marletto (arXiv, 13 May 2025) into an executable Python library. What you’ll find • One-to-one translation of the paper’s formalism: Substrates, Attributes, Tasks, Constructors, and task-algebra operators • Possibility / impossibility predicates and counterfactuals encoded exactly as defined • Test suite that mirrors every lemma and example (>95 % coverage, mypy-typed) • Reproductions of key results: time-keeping substrates, irreversibility proofs, quantum branching tasks, and a self-replicating constructor Why share? Reading the paper is tough going; expressing each definition in code clarified the ideas and surfaced a couple of questions for discussion. Hoping it helps others and sparks extensions. Looking for feedback: • Did I miss any subtleties in the formalism? • Which additional theorems or examples would you like implemented next? Repo: https://ift.tt/JG5mZvX Thanks for taking a look—issues and PRs welcome! https://ift.tt/JG5mZvX May 19, 2025 at 01:52AM
Show HN: Stack Error – ergonomic error handling for Rust Stack Error reduces the up-front cost of designing an error handling solution for your project, so that you focus on writing great libraries and applications. Stack Error has three goals: 1. Provide ergonomics similar to anyhow. 2. Create informative error messages that facilitate debugging. 3. Provide typed data that facilitates runtime error handling. https://ift.tt/38IhVmD May 19, 2025 at 12:16AM
Show HN: Vaev – A browser engine built from scratch (It renders google.com) We’ve been working on Vaev, a minimal web browser engine built from scratch. It supports HTML/XHTML, the CSS cascade, @page rules for pagination, and print-to-PDF rendering. It even handles calc(), var(), and percentage units—and yes, it renders Google.com (mostly). This is an experimental project focused on learning and exploration. Networking is basic ( http:// and file:// only), and grid layouts aren’t supported yet, but we’re making progress fast. We’d love your thoughts and feedback. https://ift.tt/67DapgG May 18, 2025 at 11:24PM
Show HN: Blacklight – secret scanner for code, databases, drives, and slack We often ran pattern matching searches for secrets and keys across codebases, databases etc. Therefore, we thought about converting that workflow into a tool that we could just easily generate a SARIF report and share with our customers. Blacklight is a powerful secret, key, and sensitive data scanning tool that helps you detect and prevent sensitive information leaks in your codebase, databases, cloud storage, and communication platforms. The idea is that one can add their custom rules around their governance and compliance requirements. The platform comes with 114 matching criteria, but this can be extended easily. https://ift.tt/jed8twF May 18, 2025 at 12:10AM
Show HN: I built a knife steel comparison tool Hey HN! I'm a bit of a knife steel geek and got tired of juggling tabs to compare stats. So, I built this tool: https://ift.tt/opziyl1 It lets you pick steels (like the ones in the screenshot) and see a radar chart comparing their edge retention, toughness, corrosion resistance, and ease of sharpening on a simple 1-10 scale. [Maybe attach the screenshot here if HN allows, or link to it] It's already been super handy for me, and I thought fellow knife/metallurgy enthusiasts here might find it useful too. Would love to hear your thoughts or any steel requests! Cheers! https://ift.tt/opziyl1 May 17, 2025 at 10:43PM
Show HN: Self-Funded Game with Homemade Engine – Play Online, Steam Coming Hi HN! I’ve been building a 2D game using a custom engine I wrote from scratch – no Unity, no frameworks. It’s fully self-funded and will be released commercially on Steam. Engine source code (MIT): https://ift.tt/hMKrLna I’d love feedback on the gameplay, visuals, performance, or anything else. Thanks! https://bereprobate.com May 17, 2025 at 03:10AM
Show HN: Solidis – Tiny TS Redis client, no deps, for serverless Hey everyone! Over the past two years I threw myself back into full-time engineering with a simple goal: write code that gives back to the community. After a lot of late-night FOMO (“AI will do it all for us, right?”) and some painful production incidents, I finally turned my weekend project into an open-source library. [ What is Solidis ? ] - Super-light (< 30 KB) RESP2/RESP3 client with zero runtime deps and first-class ESM/CJS support. - Fully tree-shakable – import only the commands you need. - Written with SOLID principles & full TypeScript typings for every command. - Designed for cold-start sensitive serverless platforms (small bundle + tiny memory footprint). [ Why I built it ] 1. node-redis & ioredis pain - ESM is still an after-thought. - Hidden deadlocks on RST, vague error surfaces. - Everything gets bundled, even commands you’ll never call. 2. I refuse to add a dependency I don’t fully understand – I literally read candidates 10× before `npm i`. 3. Serverless bills love to remind me that every KB and millisecond matters. [ Key features ] - Protocols: RESP2 and RESP3 (auto-negotiation) - Bundle size: `<30 KB` (core) / `<105 KB` (full) - Dependencies: 0 - Extensibility: Drop-in command plugins, custom transactions - Reliability: Auto-reconnect, per-command timeouts, type-checked replies [ Roadmap / Help wanted ] - Benchmarks against `node-redis` & `ioredis` (PRs welcome!) - More first-class Valkey love - Fuzz-testing the parser - Docs site – the README came first; I’d love help polishing full docs This might be my last big OSS push for a while, so stars, issues, and PRs mean the world . If Solidis saves you some cold-start time or just scratches a TypeScript itch, let me know! Repo: https://github.com/vcms-io/solidis License: MIT Thanks for reading, and happy hacking! (Feel free to AMA in the comments – I’m around.) https://github.com/vcms-io/solidis May 17, 2025 at 02:50AM
Show HN: KVSplit – Run 2-3× longer contexts on Apple Silicon I discovered that in LLM inference, keys and values in the KV cache have very different quantization sensitivities. Keys need higher precision than values to maintain quality. I patched llama.cpp to enable different bit-widths for keys vs. values on Apple Silicon. The results are surprising: - K8V4 (8-bit keys, 4-bit values): 59% memory reduction with only 0.86% perplexity loss - K4V8 (4-bit keys, 8-bit values): 59% memory reduction but 6.06% perplexity loss - The configurations use the same number of bits, but K8V4 is 7× better for quality This means you can run LLMs with 2-3× longer context on the same Mac. Memory usage scales with sequence length, so savings compound as context grows. Implementation was straightforward: 1. Added --kvq-key and --kvq-val flags to llama.cpp 2. Applied existing quantization logic separately to K and V tensors 3. Validated with perplexity metrics across context lengths 4. Used Metal for acceleration (with -mlong-calls flag to avoid vectorization issues) Benchmarked on an M4 MacBook Pro running TinyLlama with 8K context windows. Compatible with Metal/MPS and optimized for Apple Silicon. GitHub: https://ift.tt/lrwKBMp https://ift.tt/lrwKBMp May 17, 2025 at 01:34AM
Show HN: Inconveniently operating my computer with voice and hand gestures Introducing Iron OS: it's like a regular computer, but much more inconvenient Created with threejs, rosebud AI, web speech API, and mediapipe computer vision Any feedback would be appreciated! I've been having fun experimenting with computer vision and voice control lately. https://twitter.com/measure_plan/status/1923452731248795856 May 17, 2025 at 12:46AM
Show HN: Easel – Code multiplayer games like singleplayer For the past 3 years, I've been creating a new 2D game programming language where the multiplayer is completely automatic. The idea is that someone who doesn't even know what a "remote procedure call" is can make a multiplayer game by just setting `maxHumanPlayers=5` and it "just works". The trick is the whole game simulation, including all the concurrent threads, can be executed deterministically and snapshotted for rollback netcode. Normally when coding multiplayer you have to worry about following "the rules of multiplayer" like avoiding non-determinism, or not modifying entities your client has no authority over, but all that is just way too hard for someone who just wants to get straight into making games. So my idea was that if we put multiplayer into the fabric of the programming language, below all of your code, we can make the entire language multiplayer-safe. In Easel the entire world is hermetically sealed - there is nothing you can do to break multiplayer, which means it suits someone who just wants to make games and not learn all about networking. I've had people make multiplayer games on their first day of coding with Easel because you basically cannot go wrong. There were so many other interesting things that went into this project. It's written in Rust and compiled to WebAssembly because I think that the zero-download nature of the web is a better way of getting many people together into multiplayer games. The networking is done by relaying peer-to-peer connections through Cloudflare Calls, which means Cloudflare collates the messages and reduces the bandwidth requirements for the clients so games can have more players. I also took inspiration from my experience React when creating this language, here's how you would make a ship change color from green to red as it loses health: `with Health { ImageSprite(@ship.svg, color=(Health / MaxHealth).BlendHue(#ff6600, #66ff00)) }` There is a lot of hidden magic that makes the code snippet above work - it creates a async coroutine that loops each time Health sends a signal, and the ImageSprite has an implicit ID assigned by the compiler so it knows which one to update each time around the loop. All of this lets you work at a higher level of abstraction and, in my opinion, make code that is easier to understand. Speaking of async coroutines, my belief is that they don't get used enough in other game engines because their lifetimes are not tied to anything - you have this danger where they can outlive their entities and crash your game. In Easel each async task lives and dies with its entity, which is why we call them behaviors. Clear lifetime semantics makes it safe to use async tasks everywhere in Easel, which is why Easel games often consist of thousands of concurrently-executing behaviors. In my opinion, this untangles your code and makes it easier to understand. That's just the beginning, there is even more to talk about, it has been a long journey these past 3 years, but I will stop there for now! I hope that, even for those people who don't care about the multiplayer capabilities of Easel, they just find it an interesting proposal of how a next-generation game programming language could work. The Editor runs in your web browser and is free to play around with, so I would love to see more people try out making some games! Click the "Try it out" button to open the Sample Project and see if you can change the code to achieve the suggested tasks listed in the README. https://ift.tt/rl9xqfX May 14, 2025 at 04:01PM
Show HN: AsianMOM – WebGPU Vision-LLM app that roasts you like ur mom in-browser Randomly got inspired yesterday seeing SmolVLM working on WebGPU and had the silly idea for this project. it's not perfect and super limited because of the current limitations of WebML (and admittedly, because I suck at prompting, but that's why it's Open Source haha) but it is 1.5B WORTH OF AI (SmolVLM 500M and LLama 3.2 1B) working RIGHT IN YOUR BROWSER with you not having to install anything! In fact, the whole thing is actually just an index.html that you can install and even use directly! It might be a little bit slow on first try (takes about 3 mins) when it installs models, but it caches it so it's way faster the second time (also, it's available offline after it's cached haha) Works on any modern web browser It may be a funny little project, but it's genuinely taught me so much about WebML and Vision models, and the technologies we're getting with WebML will 100% democratize AI access and make it way simpler and easier to be used everywhere :p GH Repo in case you're interested: https://ift.tt/Xhlm0Oj https://ift.tt/ewQyUqj May 16, 2025 at 12:50AM
Show HN: Doxxer – CLI tool for dynamic SemVer versioning using tags Hi, first time poster here! Wanted to share a small CLI utility in Rust: doxxer! It is a tool for working with Git repositories, more specifically, extracting and calculating current/upcoming semantic versions for your repo's tags. It is heavily inspired by the output from "git describe --tags". Why use anything else then? The output is not fully SemVer compliant and therefore I was modifying it in all my projects separately, which I wanted to avoid. Single binary, single predictable output. It does not currently have pre-built binaries, so you have to install it via cargo, but it's in the roadmap! https://ift.tt/0Xlg9xT May 14, 2025 at 08:40PM
Show HN: LTXV 13B Distilled – Generate 5s Videos in Under 10s Hey HN, after our 13B release we've been working on a faster version of our open-source video model and we're excited to share it. We started with a 13B base model that already had competitive generation speeds (e.g. 55s for a 5s video on an H100 — faster than any other model out there). But we wanted to push it further to allow everyone to quickly iterate over their video generations. So we built a distilled version focused on speed without sacrificing temporal or spatial coherence. With the Distilled model, you can now generate 5-second 720p videos in about 9.5 seconds on an H100, and around 1.5 minutes on a consumer GPU like an RTX 5090. Because the base and distilled models are interoperable, you can mix and match them in a single rendering pipeline. That gives you three modes: - Distilled Pipeline: Fastest. Uses just 4–8 steps end to end. Ideal for rapid iteration and experimentation (~9.5 seconds on H100, ~1.5 min on RTX 5090). - Mixed Pipeline: Starts with the base model to capture accurate motion, physics, and detail, then switches to distilled at higher resolutions for faster rendering. A good middle ground. (~20s on H100, ~2.5 min on RTX 5090) - Base Pipeline: Full-fidelity generation from start to finish. Best quality, best for final renders. (~43s on H100) All pipelines are compatible with our multiscale rendering system, which allows you to first render a lower resolution video and upscale it as needed. The project is open source and available on GitHub ( https://ift.tt/p1YUQxw ) and Hugging Face ( https://ift.tt/wblgGWn ). You can also enjoy our Comfy integration here ( https://ift.tt/gdlwztp ) and our open source LTXV trainer ( https://ift.tt/lNdBrM4 ). Would love to hear your thoughts — especially around performance, integration into your own tools or workflows, or any creative uses you're exploring. We're actively working on tuning and adding new configurations, and early feedback is super helpful. https://ift.tt/Itrq6mk May 14, 2025 at 11:08PM
Show HN: Litelytics – A nice GA4 dashboard (better Looker Studio) My friend and I built Litelytics, a clean, simple Google Analytics(GA4) dashboard that looks great and works out of the box. No BigQuery, no setup—just connect and go. Would love your feedback! https://litelytics.io/ May 14, 2025 at 12:59AM
Show HN: Put macros.menu/ in front of any restaurant menu URL I’ve been tracking my macros every day since January 1st. Weighing and measuring at home is a breeze but eating out is a total pain. I built this tool for myself but a lot of likeminded people have loved it. Please note macros are estimated by gen AI. Image menus not supported yet. https://macros.menu May 14, 2025 at 12:49AM
Show HN: Helixdb – Open-source vector-graph database for AI applications (Rust) Hey HN, we want to share HelixDB ( https://ift.tt/aLuxfJc ), a project a college friend and I are working on. It’s a new database that natively intertwines graph and vector types, without sacrificing performance. It’s written in Rust and our initial focus is on supporting RAG. Here’s a video runthrough: https://ift.tt/4ZWaV35 . Why a hybrid? Vector databases are useful for similarity queries, while graph databases are useful for relationship queries. Each stores data in a way that’s best for its main type of query (e.g. key-value stores vs. node-and-edge tables). However, many AI-driven applications need both similarity and relationship queries. For example, you might use vector-based semantic search to retrieve relevant legal documents, and then use graph traversal to identify relationships between cases. Developers of such apps have the quandary of needing to build on top of two different databases—a vector one and a graph one—plus you have to link them together and sync the data. Even then, your two databases aren't designed to work together—for example, there’s no native way to perform joins or queries that span both systems. You’ll need to handle that logic at the application level. Helix started when we realized that there are ways to integrate vector and graph data that are both fast and suitable for AI applications, especially RAG-based ones. See this cool research paper: https://ift.tt/1TUSvW3 . After reading that and some other papers on graph and hybrid RAG, we decided to build a hybrid DB. Our aim was to make something better to use from a developer standpoint, while also making it fast as hell. After a few months of working on this as a side project, our benchmarking shows that we are on par with Pinecone and Qdrant for vectors, and our graph is up to three orders of magnitude faster than Neo4j. Problems where a hybrid approach works particularly well include: - Indexing codebases: you can vectorize code-snippets within a function (connected by edges) based on context and then create an AST (in a graph) from function calls, imports, dependencies, etc. Agents can look up code by similarity or keyword and then traverse the AST to get only the relevant code, which reduces hallucinations and prevents the LLM from guessing object shapes or variable/function names. - Molecule discovery: Model biological interactions (e.g., proteins → genes → diseases) using graph types and then embed molecule structures to find similar compounds or case studies. - Enterprise knowledge management: you can represent organisational structure, projects, and people (e.g., employee → team → project) in graph form, then index internal documents, emails, or notes as vectors for semantic search and link them directly employees/teams/projects in the graph. I naively assumed when learning about databases for the first time that queries would be compiled and executed like functions in traditional programming. Turns out I was wrong, but this creates unnecessary latency by sending extra data (the whole written query), compiling it at run time, and then executing it. With Helix, you write the queries in our query language (HelixQL), which is then transpiled into Rust code and built directly into the database server, where you can call a generated API endpoint. Many people have a thing against “yet another query language” (doubtless for good reason!) but we went ahead and did it anyway, because we think it makes working with our database so much easier that it’s worth a bit of a learning curve. HelixQL takes from other query languages such as Gremlin, Cypher and SQL with some extra ideas added in. It is declarative while the traversals themselves are functional. This allows complete control over the traversal flow while also having a cleaner syntax. HelixQL returns JSON to make things easy for clients. Also, it uses a schema, so the queries are type-checked. We took a crude approach to building the original graph engine as a way to get an MVP out, so we are now working on improving the graph engine by making traversals massively parallel and pipelined. This means data is only ever decoded from disk when it is needed, and parts of reads are all processed in parallel. If you’d like to try it out in a simple RAG demo, you can follow this guide and run our Jupyter notebook: https://ift.tt/Tob6Wql... Many thanks! Comments and feedback welcome! https://ift.tt/aLuxfJc May 13, 2025 at 10:56PM
Show HN: GS-Base – A multifunctional database tool with Python integration A wide range of possible use: from simple contact/inventory lists, photo albums to editing CSV/text files and processing (transforming, splitting, merging, normalizing) large, multi-GB data tables in various file formats. Text, Numeric, Long Text / Memo fields, Image / File fields; Code fields for code snippets with syntax highlighting for 16 programming languages. You can analyze, query and consolidate data, generate pivot tables, perform calculations, merges and joins with up to 256 million rows, 16K columns and 4GB+ files efficiently using even older PC's. Several filtering methods, searching for duplicates, for unique values and their frequencies, search-as-you-type, random and quartile searches, full-text searches, fuzzy searches. RegEx filtering of millions of records in seconds regardless of the number of the returned found records. Searching for file duplicates, finding similar photos/images, music and video files using any EXIF tags and multimedia (e.g. mp3/mp4) tags. Playing filtered lists of mp3's. Very fast data consolidation - you don't have to bother with permanent indices; internal indexes are created automatically whenever aggregation and binary lookup functions need them. Generating disk/folder listings and monitoring all file changes with searchable history of modifications. Mass-renaming, -copying and -deleting files based on filtered file listings. GS-Base can be installed on any portable storage device and used without performing any registry modifications. Fully offline - doesn't need internet connection. To move it to another computer you can simply copy the installation folder containing a few files. Questions and suggestions are welcome. https://ift.tt/fgaGEZe May 13, 2025 at 02:32AM
Show HN: Jester – An RSS/Atom Reader and Content Management Tool Jester helps you follow and organize feeds, create AI text and audio digests (with sourcing), build custom feeds from non-RSS sources, and more. It is built to have most of the features you would expect from a modern RSS reader (with more on the way), but with an eye towards feed discoverability through popularity metrics and topic tagging. You can try it out with one click (no email registration/etc. required). Any feedback/questions/suggestions is very welcome! Edit: See https://ift.tt/87VpMX9... for an example digest you can create. https://ift.tt/Tr5ksMS May 13, 2025 at 12:52AM
Show HN: Lumoar – Free SOC 2 tool for SaaS startups We built Lumoar to help small SaaS teams get SOC 2-ready without paying thousands for Big 4 consultants or dealing with bloated compliance platforms. As a startup ourselves, we faced the usual issues: long security questionnaires, confusing audit requirements, and expensive tools that felt overkill. Lumoar is a simpler alternative: - Generate compliant SOC 2 policies automatically - Track your controls and progress in a clean dashboard - Upload evidence and get plain-language recommendations - Designed for engineers and founders, not compliance pros It's free to start — you can generate policies and explore the dashboard without a sales call or demo. Would love to hear what blockers you’ve faced with SOC 2 and what other frameworks you’re thinking about (e.g., ISO 27001, GDPR). All feedback is welcome. https://www.lumoar.com May 13, 2025 at 12:35AM
Show HN: The missing inbox for GitHub pull requests Mergeable is an improved inbox for GitHub pull requests. They can be organized according to your rules into any number of sections, each section being defined as an arbitrary search query. Data is refreshed periodically, and is kept locally in the browser. Mergeable is an open source project, which can be self-hosted very easily. A free public instance is also available to get started very quickly. https://ift.tt/61rv2Rz May 12, 2025 at 10:59PM
Show HN: AI-powered batch photo editor for real estate photographers I got tired of repetitive editing tasks, so I built a tool that simplifies bulk edits using text prompts and AI workflows. Now I can quickly handle things like virtual staging, changing backgrounds, adding/removing objects, adjusting brightness and exposure, color corrections, boosting contrast and clarity, fixing distortions, batch color grading and much more! But most importantly, I can do this to all selected images, tens, hundreds or more. I'm particularly interested in feedback on the workflow and UI from photographers/editors who handle large volumes of images. I've increased the free plan credits to 40 so you can edit up to 40 images, if you'd like to help me trial it out. Otherwise I'm happy to answer any questions about the implementation or roadmap. https://4ditor.com/ May 9, 2025 at 06:38AM
Show HN: Hackergrep.com – search Hacker News for tech jobs Hey HN, I built https://hackergrep.com and I think it's ready for some attention. What is it: I wanted a fast, flexible, and focused job search tool to find new tech jobs and I didn't see anything that really fit my needs, so I built this app because you can just do things. HackerGrep indexes several recent threads on HackerNews and combines the results into a feed matching your desired search filter criteria. The system can send you daily email updates when new search results for your queries are available; opt-in search query emails are sent for 30 days and then automatically stopped. New job alert emails are batched and sent daily, so you'll get one email per alert you configure until you unsubscribe or the 30 days are up. Key features: > no banner ads / clutter. > it's free to use. > no accounts/logins needed. > advanced search syntax and full-text search. > can notify you about new jobs matching your queries via email. > the search and alert emails always show the most recent results first. (To report bugs, suggest parser/logic improvements, offer me a job, or just say hi, etc, you can find my contact info on the https://ift.tt/tQ42ZGW page) You can try it from any web browser. It's optimized for desktops or tablets with a reasonable screen size but should function anywhere. https://hackergrep.com https://hackergrep.com May 10, 2025 at 11:42PM
Show HN: PLAttice, for assembling structures much larger than the 3D printer bed Struts, nodes, and pins are reversibly assembled into fully 3D printed lattices, trusses, and tree-like structures spanning up to a few meters. I used the system to build a stand for an overhead table lamp which supports a ~1 m cantilevered arm using a tensioned floor-to-ceiling column. If you want to give it a try, find the *.stl files at the bottom of the page; figure ~1 kg of PLA and ~1 day of print time per meter of box truss; pay attention to print orientation; plz respect the license; and definitely print the pin trimming jig. https://ift.tt/Gjtox2d May 11, 2025 at 01:48AM
Show HN: Miralis – a RISC-V virtual firmware monitor Miralis is a RISC-V firmware that virtualizes RISC-V firmware. In other words, it runs firmware in user-space (M-mode software in U-mode). The fact that this is even possible is interesting: indeed, not all ISAs are virtualizable, and the same applies for their firmware mode. It all boils down to the virtualization requirements [1], which is a great read if you haven't come across it yet. Arm's EL3 cannot be virtualized, for instance, because some instructions, such as `cpsid`, are sensitive but do not trap (`cpsid` is a nop in user-space). If you have a VisionFive 2 or a HiFive Premier P550, you can try it out, the instructions are in the documentation [2, 3]. Of course, it runs on QEMU too. As Miralis is a research project, we have also been using it as a vehicle to explore other research ideas, such as automated verification of hypervisors [4]. For instance, we verified instruction emulation by comparing Miralis' implementation with the reference RISC-V executable specification [5], which we translated to Rust. It has been fun working on Miralis, I hope you'll find it interesting too! [1]: https://ift.tt/xp7HJyG [2]: https://ift.tt/DF74O29... [3]: https://ift.tt/7hJWwHu... [4]: https://ift.tt/TxuBmjg... [5]: https://ift.tt/qV4Dyuf https://ift.tt/BZqO4x3 May 10, 2025 at 11:28PM
Show HN: Piny – Astro, React and Next Visual Editor for VSCode, Cursor, Windsurf Hi, Matjaz here. Piny is a visual editor that runs directly in Visual Studio Code, Cursor and Windsurf. It supports Tailwind CSS, Astro, React and Next.js. All edits happen directly in the code, so there are no abstractions, no cloud services and no lock-in. Piny doesn’t try to be all-in-one visual editor that would cover layout creation, styling, data, logic… That is no longer relevant in the age of AI coding agents. Instead, Piny focuses on two areas where it can really add value: # Tailwind styling Piny lets you easily style JSX / HTML with Visual Controls and Class Inspector (an editable tree view of all classes and states). This also works with any strings that contain Tailwind classes. For visual tasks (such as changing the text size) it is often much easier to directly change a visual property than to go back and forth about it with your AI agent. # Project navigation Navigate the project code by selecting elements directly in the built-in browser preview. Just click on a heading, image, icon, section etc in the preview and its source element is selected in Piny and in the code. This feature requires a small dev-only script to be inserted into the layout. React with Vite, any Next.js and Astro projects are supported at this time. Piny is based on Pinegrow Web Editor, our desktop visual editor for static HTML & WordPress that we’ve been actively developing for more than a decade. This makes Piny feature complete and robust, it’s not a MVP. # Piny Free and Pro The standard edition is completely free. You don’t even have to sign up. Just install it from the extension marketplace and you’re ready to go. Piny Pro adds Visual select (Project navigation, mentioned above), custom Tailwind theme import and other goodies. We’re running an Early Access deal with 60% discount that you get to keep forever. # Visual tools in the age of AI A lot has changed in web development. When Pinegrow was launched here on HN 11 years ago, Bootstrap was a shiny new framework. Today, visual tools should be designed to complement AI assisted development. This principle is reflected in Piny: - It runs in your IDE, where you already work - All changes happen in the code - Uses visual tools for visual tasks - Helps you jump to the relevant component / element in the code so that you can then edit it visually, in code or with AI - Piny is there when you need it and gets out of your way when you don’t # Getting started To take Piny for a spin, install it from extension marketplace, right-click anywhere in your code and choose “Edit in Piny”. Pro trial version is included if you want to try Visual select. Let me know if you run into any issues, or just want to get in touch! https://getpiny.com May 10, 2025 at 06:52AM
Show HN: Kivo – AI Canvas for Data Reports Our goal is to make the best tool for turning raw data into clean, insightful reports. We think data interfaces now are outdated, and chat UIs lack usability. Kivo is an AI powered text editor, that can help you turn, Excels, PDFs, and CSVs into insightful reports fast. - Clean and format your data - Generate complete first drafts, ready with charts and insights - Combine insights from multiple files, including PDFs and the web Give it a try for free. Any feedback is welcome! https://kivo.dev May 10, 2025 at 01:06AM
Show HN: Embracing the Chaos of Random Workouts This might look like just another workout app but my past weeks of dogfooding with it has at least spiced up my own home workouts and added some extra flavor to gym workouts. You can try it out without signing up and all feedback is welcome. https://ift.tt/NWqAZRg May 8, 2025 at 11:24PM
Show HN: Tree-walk interpreter (and formatter) written in C Hello HN, this is my first "completed" project since I took on this coding journey. Vern is a statically typed scripting language with lots of rough edges. You can try it out at https://vern.cal31.dev You can find the source code and some documentation at https://ift.tt/V3pSvzI https://ift.tt/V3pSvzI May 8, 2025 at 10:30PM
Show HN: A new social network just for AI memes Hi HN, We're making a new social network for AI-generated videos. While AI films are still a few years away, the niche of re-lipsynced AI videos is rampant and perhaps the fastest growing form of AI-generated content. Re-dubbed TV shows and movies are doing 10s of millions of views and have become their own new meme-format. In the last 7 days, videos made on the app did 1.1m views! We made eggnog.ai/remix for this reason. You can use the product to make funny videos to send to friends (cartoon remixes take < 20s to make) and live-action take 1-2 minutes (no sign-up required to make something). We also just launched our mobile app where you can reserve a username and see what other people are making! The mobile app feed is also a bit more real-time. You can download the app here: https://apps.apple.com/us/app/scenemix-voice-ai/id6742719343 We would love to hear your feedback HN :) https://www.eggnog.ai/remix May 8, 2025 at 02:38AM
Show HN: Cloi – free local debugging agent in your terminal Hey everyone! For the past two weeks my friend and I have been heads-down building Cloi, a fully local debugging agent that runs right in your terminal. You probably know the drill—every AI coding tool asks for API keys, subscriptions, and uploads your entire codebase to the cloud. Cloi does none of that: it runs entirely on your machine, with no cloud, no API keys, no subscriptions, and zero data leaving your system. What Cloi does: - Contextual error capture: Grabs your stack trace, local files, and environment to understand the issue. - Local LLM inference: Spins up Ollama on your box and generates targeted fixes—no external servers. - Safe patch application: Presents you with diffs and only applies changes when you explicitly approve. - Model‐agnostic: Ships with Phi-4 out of the box (surprisingly capable for its size!), but you can swap in any Ollama model you’ve installed. Why we built it: - Maintain full control over your code and data—ideal for security-sensitive projects - Avoid recurring subscription fees and cloud vendor lock-in - Keep your development flow entirely offline when you need it Highlights: We hit 202 stars in just 5 days, which tells us we're not the only ones who wanted this! Cloi is plug-and-play (just install and run), and we designed it to be completely unopinionated, meaning you can you whatever Ollama model you want. Get it now: npm install -g @cloi-ai/cloi If you find Cloi useful, we’d really appreciate a star on GitHub. Try it out, let us know what you think, and happy debugging! — Gabriel Cha & Mingyou Kim https://ift.tt/debfIpr May 7, 2025 at 10:55PM
Show HN: Kevin-32B – how to do multi-turn RL on writing CUDA kernels Hey – we just published a blog post about Kevin-32B = K(ernel D)evin. It's to our knowledge the first open-source model that's RL-trained on CUDA kernels. Our goal was to demonstrate multi-turn RL using GRPO. We used 180 Python->CUDA conversion tasks from the KernelBench dataset. The results were surprisingly strong! We were able to outperform top reasoning model like o3 & o4-mini. We're sharing our training setup and learnings in the blogpost. Also the model is on HuggingFace: https://ift.tt/4P2c0Bj https://ift.tt/2TYWtkZ May 7, 2025 at 01:18AM
Show HN: X402 – an open standard for internet native payments Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or hand over a credit card This flow blocks agents even more. They can’t solve CAPTCHAs or enter credit cards. It also hurts sellers: fraud, chargebacks, onboarding friction, and marketing to humans are huge pain points. Why buyers care Zero setup – Hit a new endpoint immediately. Runtime discovery – Because every x402 service exists in a common registry, an agent can search, compare, and invoke in one loop. Self-assembling agents become practical. Easily create proxy servers – Want an endpoint that isn’t supported? You can use our proxy server template to spin up an x402-compatible instance yourself using traditional API keys, and monetize it for others wanting access. Why sellers care Reach incremental demand – Long-tail bots, side projects, one-off scripts, all of which too small for an account/signup flow, can now pay you. Micropayments without fraud – All payments settle onchain, nothing for stolen credit cards or chargebacks to reverse. Embedded distribution – instead of marketing to humans, create a compelling service meeting demand for agents and watch the requests roll in. How we got here Last year we launched AgentKit (wallets for AI agents). Tens of thousands of agents now hold onchain balances, but they can’t pay for most web services. We revived the long-unused HTTP 402 (“Payment Required”) status code and wrote a spec to make it real. Marc Andresseen calls the lack of native value transfer “the original sin of the internet,” and we see x402 as the absolution of this sin. How it works: x402 specifies a standard response body to accompany a 402 status code. This response body contains machine understandable instructions for how to pay. Payments are signature based an included as an `X-PAYMENT` header in a subsequent request to the same API endpoint. The accepting server can verify and settle payment themselves, or delegate the onchain settlement to what we call a facilitator. This means you don't have to touch crypto as a developer, you can just integrate a middleware and start receiving stablecoin payments in as little as 1 line of code. Because x402 natively traverses your existing client / server requests, it can be implemented in any language, and doesn't require webhooks, or any other complex integration. Its literally this simple: `paymentMiddleware("0xYourAddress", {"/your-endpoint": "$0.01"})` Ask HN API providers – does the one-line integration fit your stack? What’s missing? Agent / infra builders – if a service isn’t available is the proxy server template sufficient? File issues, PRs welcome Everyone – poke holes in the trust and fee model; we’d love to iterate with your feedback Curious to learn more? Check out our documentation and repo for more information, and please don’t hesitate to reach out to get onboard. https://ift.tt/H9Me3Cd https://x402.org https://ift.tt/vg2LT0q... https://www.x402.org/ May 6, 2025 at 11:54PM
Show HN: Fast parser and generator for RSS, Atom, OPML and popular namespaces Hi HN! While working on a project that involves frequently parsing a lot of feeds, I needed a fast JavaScript-based parser to extract specific fields from feed namespaces. Existing Node packages were either too slow or merged all feed formats, losing namespace information. So I decided to write it myself and created this NPM package with a simple API. Feedsmith supports all feed formats and many popular namespaces, including: Podcast, Media, iTunes, Dublin Core, and more. It can also parse and generate OPML files. I am currently adding support for more namespaces and feed generation for RSS, Atom and RDF. The library grew into something bigger than I initially anticipated, so I also started creating a dedicated documentation website to describe all the features. https://ift.tt/e92EOks May 6, 2025 at 11:33PM
Show HN: Tired of bloated time trackers? Here's a dead-simple, free one I built Hey HN! I made TimeAnt because my dad needed a simple way to track his time at work and he didn’t like the other apps out there because they were too complicated or had way too many features. So, I built an app that just does the basics: track work hours, meetings, breaks, lunch and optionally lets you add notes - and that's it. It’s totally free, works both online and offline, and doesn’t require an account (but you can create one if you want). The goal was to keep it super simple and let you focus on tracking time without all the fluff. It also gave me a chance to learn Swift and build my first native iOS app! I’d love to hear what you think! Best, Viktor https://ift.tt/z75qonx May 6, 2025 at 01:21AM
Show HN: I built a mini macOS app to reveal my yearly subscription spending I built a macOS app to track my subscriptions after realizing I was spending over $XXXX annually on services I barely used. I wanted a simple, privacy-focused tool to help me stay on top of recurring charges without relying on third-party integrations or sharing financial data. Key Features: – Visual Calendar: See all upcoming charges in a monthly view. – Custom Notifications: Set reminders for upcoming payments. – Highlights: Flag subscriptions as annual, trial, or one-time. – Statistics: View projected yearly spending, average monthly costs, and peak spending months. – Custom Categories: Organize subscriptions with user-defined categories. – Multi-Currency Support: Convert prices on the fly to your preferred currency. – Status Management: Mark subscriptions as active or canceled, with accurate updates in your stats. – Quick Addition: Start typing a service name, and the app auto-suggests logos, categories, and colors. – Import and export data The app is free to use with some limitations. I’m currently working on additional features and would appreciate any feedback or suggestions from the community. https://ift.tt/5k90fWo May 5, 2025 at 11:31PM
Show HN: Open-lmake, a scalable, reliable build system with auto dep-tracking Hello Hacker News, I often hear people saying "all build-systems suck", an opinion I have been sharing for years, and this is the motivation for this project. I finally got the opportunity to make it open-source, and here it is. In a few words, it is like make, except it can be comfortably used even in big projects using HPC (with millions of jobs, thousands of them running in parallel). The major differences are that: - dependencies are automatically tracked (no need to call gcc -M and the like, no need to be tailored to any specific tool, it just works) by spying disk activity - it is reliable : any modification is tracked, whether it is in sources, included files, rule recipe, ... - it implements early cut-off, i.e. it tracks checksums, not dates - it is fully traceable (you can navigate in the dependency DAG, get explanations for decisions, etc.) And it is very light weight. Configuration (Makefile) is written in Python and rules are regexpr based (a generalization of make's pattern rules). And many more features to make it usable even in awkward cases as is common when using, e.g., EDA tools. Give it a try and enjoy :-) https://ift.tt/xH2MsOF May 3, 2025 at 09:41PM
Show HN: Traycer.ai – Turn GitHub Issues into a Step-by-Step Plan Hey everyone! We've built Traycer, a tool that transforms your GitHub issues—everything from descriptions and attached images to ongoing conversations—into clear, actionable implementation plans. You can easily import these plans into your IDE with our extension or use them with any other coding assistant you prefer. We'd love to hear your thoughts and feedback. Traycer is totally free for open-source projects, and we've got a 2-week free trial if you're working with private repos. Give it a try and let us know what you think! https://ift.tt/38e0HSX May 3, 2025 at 01:56AM
Show HN: I built a synthesizer based on 3D physics and launched the product I've been working on the Anukari 3D Physics Synthesizer for a little over two years now. It's one of the earliest virtual instruments to rely on the GPU for audio processing, which has been incredibly challenging and fun. In the end, predictably, the GUI for manipulating the 3D system actually ended up being a lot more work than the physics simulation. So far I am only selling it direct on my website, which seems to be working well. I hope to turn it into a sustainable business, and ideally I'd have enough revenue to hire folks to help with it. So far it's been 99% a solo project, with (awesome) contractors brought in for some of the stuff that I'm bad at, like the 3D models and making instrument presets/videos. The official launch announcement video is here: https://www.youtube.com/watch?v=NYX_eeNVIEU But if you REALLY want to see what it can do, check out what Mick Cormick did with in on the first day: https://ift.tt/TpXA4PR I've kept a fairly detailed developer log about my progress on the project since October 2023, which might be of interest to the hardcore technical folks here: https://ift.tt/RN512oB I also gave a talk at Audio Developer Conference 2023 (ADC23) that goes deep into a couple of the problems I solved for Anukari: https://www.youtube.com/watch?v=lb8b1SYy73Q https://anukari.com May 2, 2025 at 11:42PM
Show HN: Blast – Fast, multi-threaded serving engine for web browsing AI agents Hi HN! BLAST is a high-performance serving engine for browser-augmented LLMs, designed to make deploying web-browsing AI easy, fast, and cost-manageable. The goal with BLAST is to ultimately achieve google search level latencies for tasks that currently require a lot of typing and clicking around inside a browser. We're starting off with automatic parallelism, prefix caching, budgeting (memory and LLM cost), and an OpenAI-Compatible API but have a ton of ideas in the pipe! Website & Docs: https://ift.tt/nWNjFZQ https://ift.tt/kWmuCgx MIT-Licensed Open-Source: https://ift.tt/Pn5iY8c Hope some folks here find this useful! Please let me know what you think in the comments or ping me on Discord. — Caleb (PhD student @ Stanford CS) https://ift.tt/Pn5iY8c May 2, 2025 at 11:12PM
Show HN: Lichen – Manage and create code licenses on the CLI and with TOML Hey! I'm Miles, I built this tool to be a fast and reliable solution for generating licenses on the CLI. Licensing has always been a point of stress for me, with how much is at stake. If I copy one from the wrong website, the version I download is the wrong one, or any number of mishaps, my whole code is at risk. We see this fiasco play out all the time. We shake our saddened heads and go on. No longer! Lichen is designed to generate licenses sensibly with three words on the CLI. `lic gen MIT`. Or in a `.lichen.toml` in your project root. Add authors/maintainers with --authors, date it with --date, license specific parts with exclude patterns and double licenses. Project big or small, it's got everything (I think). (Tell me what it's missing please). It uses SPDX licenses for correctness. Written in Rust, you'll know you're safe, and if you want to be extra cautious, feel free to create license headers on all your files (Fast too! Can do this for the entire cargo project in 22s uncached). I'm happy to answer any questions/concerns/whatever about my tool, it's my biggest project to date (And therefore my most bug-ridden...) https://ift.tt/oLYQKEp May 1, 2025 at 10:25PM
Show HN: Keyboard Minesweeper – Speedrun the Classic, No Mouse Needed Hi HN! Here's a little hobby project of mine. I reimagined Minesweeper for the keyboard warriors out there. No mouse. No distractions. Just lightning-fast gameplay, tight controls, and a design built for speedrunners and puzzle lovers. Give it a try: https://ift.tt/HNX086L Would love your feedback, or see if you can beat my best times: 5.41s on small, 46.51s on medium. https://ift.tt/HNX086L May 1, 2025 at 01:29AM
Show HN: Jarvis-AI, an AI Agents network that kills admin work in big corporate Cheers HN, We're Oli and Pascal, two friends from ETH Zürich. We built a network of AI Agents for large organisations, that finally gets rid of all admin work for employees. Current features are: - Schedule, move or cancel meetings (via Google Calendar or locally) - Dynamically adapt meetings according to stakeholders’ availabilities (internal communication of the agents) - Summarize incoming mails (via Gmail) - Create a project plan (command: plan XXX = [project description]) including stakeholders, timeline and cost estimate - Plan, assign and view tasks - Do all of the above via audio We believe that the network point is the core of the product. If you're planning a new project, Jarvis should not only give ideas but also propose whom to work with based on the context information of all the other Jarvises in the company. Instead of sending mails, information flow happens between the Agents and the audio feature makes it super natural to speak to your Jarvis. This is very early stage, so any advice/feedback is much appreciated :) https://ift.tt/cxg20CZ May 1, 2025 at 12:19AM
Show HN: The $300K DevinAI Secret is Now Open Source You’ve probably heard of DevinAI’s new release, DeepWiki-a tool that analyzes GitHub repos and generates AI-powered documentation. The catch? It reportedly cost $300K in compute and is locked behind a paywall. I thought: why not make this accessible to everyone? Introducing Open DeepWiki: An open-source, self-hosted alternative that turns any GitHub repo into a comprehensive wiki with AI-generated docs, architecture diagrams, and code explanations. No cloud lock-in, no paywalls, just local, private analysis. Features: AI-generated documentation (supports GPT, Gemini, and local models) Visual diagrams (using Mermaid.js) Codebase Q&A with RAG-powered AI Works with private repos, runs entirely on your machine Repo: https://ift.tt/lzWOMoZ https://ift.tt/lzWOMoZ April 30, 2025 at 09:07PM
Show HN: Beatsync – perfect audio sync across multiple devices Hi HN! I made Beatsync, an open-source browser-based audio player that syncs audio with millisecond-level accuracy across many devices. Try it live right now: https://ift.tt/qhlO1zA The idea is that with no additional hardware, you can turn any group of devices into a full surround sound system. MacBook speakers are particularly good. Inspired by Network Time Protocol (NTP), I do clock synchronization over websockets and use the Web Audio API to keep audio latency under a few ms. You can also drag devices around a virtual grid to simulate spatial audio — it changes the volume of each device depending on its distance to a virtual listening source! I've been working on this project for the past couple of weeks. Would love to hear your thoughts and ideas! https://ift.tt/dD5hlbC April 29, 2025 at 11:02PM
Show HN: Xilt – A concurrent log parser written in Go xilt is a utility for parsing Common and Combined Log Format (CLF) log files and storing them in SQLite for further analysis. I have built it as a learning project but it ended up proving useful in my work day-to-day. Maybe someone else occasionally working with CLF logs will also find it handy! https://ift.tt/XLsiEQk April 29, 2025 at 09:26PM
Show HN: ProKZee – An Open-Source Network Security Tool Written in Go Hi HN! After several months of work, I'm excited to share ProKZee, a free and open-source network security tool built with Go and React using Wails framework. ProKZee allows developers, security researchers, and penetration testers to intercept, inspect, and modify HTTP/S traffic — similar to tools like Burp Suite, OWASP ZAP, and Caido — but with a fast native UI, modern UX, and some unique features. https://ift.tt/B5jLu42 https://ift.tt/B5jLu42 April 29, 2025 at 01:11AM
Show HN: Zotero-MCP – Connect Your Research Library with Your AI Assistant Hi all! I forgot to share my project here, but since it just got over 1.2k calls on smithery, I figured that people here may be interested in giving it a try! Essentially it allows you to easily connect your zotero library to any LLMs through a MCP client, enabling the LLMs to read the papers that you collected, your notes, and the annotations - and it works both on your local and cloud library. Check this out! I would love to hear your feedback. :) https://ift.tt/7EFtbW4 April 29, 2025 at 12:06AM
Show HN: Daily Jailbreak – Prompt Engineer's Wordle I created a daily challenge for Prompt Engineers to build the shortest prompt to break a system prompt. You are provided the system prompt and a forbidden method the LLM was told not to invoke. Your task is to trick the model into calling the function. Shortest successful attempts will show up in the leaderboard. Give it a shot! You never know what could break an LLM. https://ift.tt/XDz3kde April 28, 2025 at 12:02AM
Show HN: I build a Fantasy NHL app in 3 days with Claude AI I am not from North America, and moved there a couple years ago. After being invited to the first fantasy league and seeing the platform they were using, I couldn't bring myself to check it every day. An excel sheet would have been more appealing to use than this. So I decided to create my own. But on the side? This would take ages. I am very confident with Rust and JavaScript, but it still takes ages to build something like that. Good prompts, and a few long nights later, and I could create something fun and easy to use. Have a look: https://ift.tt/DTW4ZCU The frontend is in React, the backend in Rust. I deployed both via fly.io. It was so simple and fast, it was shocking. After it was deployed, I took 2-3 days to refactor everything and made it neat and tidy, so I could possibly open it up for general use with accounts etc. The first time I built something with the help of AI not just for me. The biggest help was certainly the UI and styling. I was never good at that. The first draft looked rough. I fed it some screenshots from NHL.com and told the model to "make it look nicer". What you see is I think the 20th iteration of the app, slowly improving, fixing bugs etc. But 90% with the help of AI. I could have done 98% myself (except the styling part). And after each working iteration, I spend quite some time cleaning up so I can build on top of that. The beauty? The cleaner, more modular code base saved tokens and made it easier for the model to refactor and understand. Strictly typed (TypeScritp in the frontend, Rust in the backend) helped as well! April 26, 2025 at 10:34PM
Show HN: IdeaKiln – A platform to validate your startup ideas before building Hey HN, I'm Sebastian, and I just launched IdeaKiln.com — a platform to help makers, indie hackers, and founders validate their early-stage ideas, prototypes, or MVPs through community feedback. The idea came from personal frustration. I’ve started several projects where I spent weeks — sometimes months — building only to realize no one really wanted what I made. Without a large audience or email list, it’s hard to get early signals. IdeaKiln is my way of solving that problem. Instead of silently building in isolation, IdeaKiln gives you a place to: - Share what you’re working on (even in rough form) - Get early feedback and upvotes from fellow makers - Discover whether your idea resonates before committing too much time - Pivot or refine your direction based on real responses There’s no need for a landing page or pitch-perfect copy. Just post your raw idea and start the conversation. Right now, the platform is brand new and I’m looking to grow it into a helpful space for honest, early validation. If you’re working on something — or just have an idea in your head — I’d love for you to give it a try: https://ift.tt/1kG8PYZ Also happy to answer any questions, or chat about where it’s headed. Feedback is always welcome! April 25, 2025 at 12:58AM
Show HN: Infat – Declaritive application assocation manager for macOS Bello! Made this to help navigate the tumultuous process of navigating to a new machine on Mac when you have a number of custom utilities setup for editing particular files. This is designed to make that as easy as possible, and add some magic on top of that, like setting mailto handlers or anything else of that breed. Use XDG_CONFIG_HOME to keep it organized. Credit to https://ift.tt/f3enoMc for the original inspiration for the project. Happy to answer and help with whatever. https://ift.tt/zUlKvog April 24, 2025 at 11:07PM
Show HN: Document agent example that can parse and chat over unstructured data Hi all, Dapr maintainer here. We've added a new example that shows how you can build a conversational agent that can upload, parse and understand complex documents, while retaining long-term memory. The example also shows how the agent can upload the file to multiple storage providers. Would be great to get your feedback. https://ift.tt/qPbfgo6 April 24, 2025 at 12:16AM
Show HN: Body Controlled 3D Dino Game Hey HN, I am Niko. I've built this 3D Dino Game In browser using tech like three.js and MoveNet (tensorflow). Basically, it's a normal 3D dinosaur game with a twist: you need to actually perform actions irl to avoid obstacles. Duck to crouch, jump to jump, raise left hand - go left, raise right hand - go right. Game is using your phone/laptop camera to track your body movements and perform in-game actions. PS. Game is 100% client side and I don't record/track/use/save any of your data Hope you find it worth playing. (better play on PC) It's a 100% FREE browser game with no login! Please feel welcome to DM feedback or reply or anything! https://ift.tt/nfCmxuh April 23, 2025 at 02:58PM
Show HN: Itsi – all-in-one HTTP server and proxy with first-class Ruby support Hey HN, Meet "Itsi", a high‑performance, all‑in‑one HTTP server and proxy with first-class Ruby support. It's a drop‑in replacement for your current Rack server, built on Hyper and Tokio, ships with batteries‑included middleware, and lets you go from dev to production without any surprises. Itsi is my attempt at eliminating the disparity that commonly exists between production and non-prod environments. A single, efficient process containing everything you need to serve your app, equally at home on a Raspberry Pi or local dev box as it is on your production VPS or Kubernetes cluster. You get a broad set of built-in security and performance features (rate limits, JWT auth, CSP, intrusion-protection, automated certs, compression, ETag support, cache-control, etc.), an ergonomic dev experience with bundled RubyLSP support, zero-downtime config reloads, first-class Ruby gRPC handler support, Fiber-scheduler mode (à la Falcon), and more—all in one minimal library. In addition to native performance on par with top Rust and C servers, Itsi’s big wins come from replacing Ruby middleware and application-level concerns with native equivalents, freeing your Ruby CPU cycles for the logic that actually matters. Itsi is new but well-tested and already powering small production apps. I’d love to hear from eager early adopters who can help kick the tires and battle-test it. Thank you! https://itsi.fyi April 23, 2025 at 10:38PM
Show HN: I open-sourced my AI toy company that runs on ESP32 and OpenAI realtime Hi HN! Last year the project I launched here got a lot of good feedback on creating speech to speech AI on the ESP32. Recently I revamped the whole stack, iterated on that feedback and made our project fully open-source—all of the client, hardware, firmware code. This Github repo turns an ESP32-S3 into a realtime AI speech companion using the OpenAI Realtime API, Arduino WebSockets, Deno Edge Functions, and a full-stack web interface. You can talk to your own custom AI character, and it responds instantly. I couldn't find a resource that helped set up a reliable, secure websocket (WSS) AI speech to speech service. While there are several useful Text-To-Speech (TTS) and Speech-To-Text (STT) repos out there, I believe none gets Speech-To-Speech right. OpenAI launched an embedded-repo late last year which sets up WebRTC with ESP-IDF. However, it's not beginner friendly and doesn't have a server side component for business logic. This repo is an attempt at solving the above pains and creating a great speech to speech experience on Arduino with Secure Websockets using Edge Servers (with Deno/Supabase Edge Functions) for fast global connectivity and low latency. https://ift.tt/xWlsBeL April 22, 2025 at 07:40PM
Show HN: ArTok is TikTok for research papers Hello everyone! I always found it hard to find new research papers outside of my usual bubble. I thought a random feed (with no recommendation algorithms) might be a fun way to explore. But I also didn’t want to waste time on completely unrelated stuff — so the idea of a fast, swipeable format came to mind. Wikitok was a real inspiration! But Arxiv and Open Review APIs weren’t as robust as Wikipedia, so I pulled the papers into a Postgres backend. Right now, I’ve indexed papers from a few recent ML conferences to see if this might be useful for others too. No signups required and it’s totally free. You can mark your favorites and add text annotations, which are saved on your device. Would love to hear your feedback! https://artok.app April 22, 2025 at 12:43AM
Show HN: Open Codex – OpenAI Codex CLI with open-source LLMs Hey HN, I’ve built Open Codex, a fully local, open-source alternative to OpenAI’s Codex CLI. My initial plan was to fork their project and extend it. I even started doing that. But it turned out their code has several leaky abstractions, which made it hard to override core behavior cleanly. Shortly after, OpenAI introduced breaking changes. Maintaining my customizations on top became increasingly difficult. So I rewrote the whole thing from scratch using Python. My version is designed to support local LLMs. Right now, it only works with phi-4-mini (GGUF) via lmstudio-community/Phi-4-mini-instruct-GGUF, but I plan to support more models. Everything is structured to be extendable. At the moment I only support single-shot mode, but I intend to add interactive (chat mode), function calling, and more. You can install it using Homebrew: brew tap codingmoh/open-codex brew install open-codex It's also published on PyPI: pip install open-codex Source: https://ift.tt/4Di63ux https://ift.tt/4Di63ux April 21, 2025 at 11:27PM
Show HN: I built Run for Fun to stop me from doomscrolling until I exercise Some of you might know me as the developer of HACK, the iOS and Android apps for Hacker News. I spend a lot of time doomscrolling on Reddit, YouTube, and here at Hacker News. I also enjoy Powerlifting. So, I wondered whether I could use exercising as a way to reduce doomscrolling. So, I built Run for Fun. It helps you reduce screen addiction, end doomscrolling, practice self-discipline, and get healthy. You can privately and securely limit the usage of addictive social media apps and websites until you perform physical activity. When you walk, run, bike, climb stairs, and exercise, you gain screen time points to use those apps. You can control how easy or hard it is to gain those points. You can choose which weekdays and between what time period restrictions apply. You can snooze restrictions, choose how long to snooze for, or disable the snooze button altogether. I built it in Swift and according to Apple, is only 860 kB to download and 1.8 MB to install. I pride myself in keeping downloads small. It uses Apple's Screen Time and HealthKit APIs. The physical activity and app usage data stays private and is not transmitted to me, the developer. There are no ads and no subscriptions. Free version is limited to restricting 1 app, 1 website, 1 category and all-day everyday schedule. A one time only in app purchase gets you lifetime access to restricting unlimited apps, websites, and categories, restrictions scheduled on specific weekdays and time, and custom screen time points calculation and snooze times. Is this something you may find useful? https://ift.tt/h2f4607 April 21, 2025 at 10:48PM
Show HN: Real-time 4/20 cannabis sales dashboard using Estuary and Tinybird Built this dashboard to visualize cannabis sales in real time across North America during 4/20. The data updates live from thousands of dispensary POS transactions as the day unfolds. Under the hood, we’re using Estuary for data streaming and Tinybird to power super fast analytical queries. The charts are made in Tremor and the map is D3. https://420.headset.io April 21, 2025 at 12:33AM
Show HN: TikTrotter – TikTok but for obscure travel trivia to beat doomscrolling I'm trying to stop doomscrolling social media, so I made a website to help me. I'm a huge traveler so I made a website that shows infinitely-scrolling obscure locations with interesting trivia in a TikTok-like manner. I've been discovering a lot of cool places in the world and dropped my social media time a lot. The website is 100% free, no ads and no sign-up. Check it out if interested, I would appreciate some feedback. Next step is to create a multiplayer trivia game where you can challenge your friends and see who knows more about the world. https://ift.tt/kMK0lnb April 20, 2025 at 09:34PM
Show HN: Tascli, a simple, local CLI task and record manager A simple task and record manager in CLI, with entries stored in a local sqlite file. Treats task (things with a due date) and records (things with only event date) separately and able to manage both. https://ift.tt/i0uoyVC April 21, 2025 at 12:31AM
Show HN: Ibex – a cross-platform iOS backup decryption tool ibex is a cross-platform tool designed for decrypting and extracting iOS backups. It provides forensic investigators, security researchers, and power users with the ability to access and analyze encrypted iOS backup data. It can be built and used on macOS, Linux, and Windows and is permitted to be used only with the explicit and informed consent of the backup data owner. Ibex was written in Go for straightforward compilation and to circumvent dependency issues and with the goal of enabling researchers and defenders assisting civil society victims of spyware and stalkerware Key Features - Decrypt encrypted iOS backups - Support for latest iOS versions - Cross-platform compatibility (macOS, Windows, Linux) - Automatic backup detection - Single file extraction based on filename match - Structured output organization - Detailed manifest parsing and extraction Basic Usage Examples # Run with automatic backup detection and interactive mode ibex # Specify just the backup path ibex -b /path/to/backup # Specify backup path and password ibex -b /path/to/backup -p "backup_password" # Specify custom output directory ibex -b /path/to/backup -p "backup_password" -o /path/to/output # Specify a single file for decryption and extraction ibex -b /path/to/backup -o /path/to/output --file sms.db # Specify relative path preserved output ibex -b /path/to/backup -o /path/to/output -r https://ift.tt/zBpRSQc April 19, 2025 at 11:10PM
Show HN: Dirb – Directory in Bio Dirb lets you build a personal profile, organize links into rich, shareable lists, and automatically pull metadata and embeds. With built-in analytics, you can track clicks, views, and visits. It's made for creators, entrepreneurs, and professionals. Let me know what you think. I appreciate any feedback! https://dirb.io April 19, 2025 at 12:42AM
Show HN: (bits) of a Libc, Optimized for Wasm I make a no-CGO Go SQLite driver, by compiling the amalgamation to Wasm, then loading the result with wazero (a CGO-free Wasm runtime). To compile SQLite, I use wasi-sdk, which uses wasi-libc, which is based on musl. It's been said that musl is slow(er than glibc), which is true, to a point. musl uses SWAR on a size_t to implement various functions in string.h. This is fine, except size_t is just 32-bit on Wasm. I found that implementing a few of those functions with Wasm SIMD128 can make them go around 4x faster. Other functions don't even use SWAR; redoing those can make them 16x faster. Smooth sort also has trouble pulling its own weight; a Shell sort seems both simpler and faster, while similarly avoiding recursion, allocations and the addressable stack. I found that using SIMD intrinsics (rather than SWAR) makes it easier to avoid UB, but the code would definitely benefit from more eyeballs. See this for some benchmarks on both x86-64 and Aarch64: https://ift.tt/19Y7OJC... https://ift.tt/emynIYP April 18, 2025 at 11:36PM
Show HN: I built a simple, fast transit app for the Bay Area Hey HN, I built Commuter because I was tired of switching between different apps to check arrival times for BART, Caltrain, Muni, ferries, and more. This app pulls directly from the official 511 API and aims to provide a fast, clean experience focused on real-time departures. There’s no account creation, it’s free to use, and it supports every major transit provider in the Bay Area—from Napa down to San Jose. You can search, favorite lines/stops, and see live countdowns with minimal friction. It’s built entirely in SwiftUI using native Apple frameworks. Happy to answer questions about the API, SwiftUI quirks, or anything else. Feedback welcome! https://ift.tt/c7PbW6L April 18, 2025 at 11:00PM
Show HN: val – An arbitrary precision calculator language written in Rust Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :) https://ift.tt/zjunLZ7 April 18, 2025 at 01:21AM
Show HN: HN Watercooler – listen to HN threads as an audio conversation Hi HN, here's something fun to play with. It takes any HN thread and turns it into an audio conversation so you can listen to the thread while doing other things. I've seen many previous attempts to turn HN threads into podcasts, but they all shared a common issue IMO: trying to reduce the very rich back-and-forth into a single-thread single-reader boring podcast. Instead, I wanted to hear the actual debate from the actual thread! So I asked Claude 3.7 to build this for me as a browser-only app. It just needs a thread URL and an Elevenlabs API key (this all remains in your browser, you can check the source code, it's only 3 files, there is no server storage of anything). To make the resulting audio experience as natural as possible, each commenter has a different voice. Commenters who appear multiple times in the thread have the same voice, and introduce themselves. A bit of context is also introduced when coming back "up" from deeply nested comments. You can play the resulting audio or download it for later listening. I'm planning to later add the ability to load multiple threads so I can have a playlist generated for listening in the gym! Any comments or improvement suggestions are appreciated! https://ift.tt/cfZljsa April 18, 2025 at 12:24AM
Show HN: Zuni (YC S24) – AI Copilot for the Browser Hi HN, I'm Will, and along with my co-founder George, we've built Zuni ( https://zuni.app ) - a browser extension that adds contextual AI capabilities to your browser. It understands what you're reading and working on, whether that's email, research, or anything else in your tabs. We started out building a full email client with AI built in (you might have seen that version showcased in YC’s AI Design Review - https://www.youtube.com/watch?v=DBhSfROq3wU&t=1601s ), but learned that people don't actually want to leave their existing tools - they just want them to work better. Gmail might be frustrating, but it has years of features people rely on. So we pivoted to enhance the tools people already use, rather than replace them entirely. Some specific things Zuni does today: - Analyzes emails as you read them in Gmail, identifying action items and suggesting possible responses - Lets you discuss how to handle tricky emails, almost like having a thought partner - Maintains context across your browsing session so you can ask follow-up questions naturally - Runs locally first for speed and privacy - Doesn't store chats, emails or anything sensitive in the cloud We're still early and focusing on getting the core experience right before adding more integrations. The goal is to make AI actually useful in your daily work, rather than just another "AI feature" checkbox. Would genuinely love feedback from the HN community - what would make this truly useful for your workflow? What are we missing? Happy to answer any questions about the technical implementation too. https://zuni.app April 17, 2025 at 08:45PM
Show HN: We made a VS Code extension to recreate a debugger experience from logs A month ago [1], we made an MCP server so Cursor can debug Node.js on its own. We emailed every person that starred our repository [2] and learnt that frontend devs really want to give Cursor access to browser logs, and that backend devs (our intended audience) do not use debuggers nearly as much as we thought. We interviewed friends across startups and discovered that they use logs to debug, because they can’t run services locally on their machine. The services (1) require too much disk, RAM, or CPUs to run locally, (2) have too many service dependencies (think microservices), or (3) are a faff to instantiate locally with a debugger. Instead, our friends instrument their services, deploy them to staging environments via Kubernetes, and then query the logs via data stores (think Grafana, Axiom.co, Google Cloud Logging, etc) or directly (think Kubernetes logs). We thought: "What if we could recreate a debugger-like experience from logs?". That would save them from browsing logs and trying to make sense of them outside the context of the code base. We looked into it and made a VS code extension that lets you (1) import logs, (2) go to the line of code associated with a log, and navigate up/down the probable call stack associated with a log. It's a prototype, but if you're interested in trying it out, we'd love some feedback! GitHub: github.com/hyperdrive-eng/traceback --- References: [1]: https://ift.tt/DiQzNX6 [2]: 140 Github stars, 69 emails sent (the rest were bots), 19 responses received (= 28% response conversion), 4 meetings held (= 21% meeting conversion). https://ift.tt/qi6vZYO April 17, 2025 at 04:37AM
Show HN: Milter in Rust to Add Headers Here's a milter in Rust that adds List-Unsubscribe headers. It creates a URL that has encoded email-from, rcpt-to and a HMAC SHA 256 verification hash using a shared secret key. Possibly it improves delivery of newsletters and transactional emails. https://ift.tt/gpyfUaV April 17, 2025 at 02:22AM
Show HN: Particle - News, Organized Hello HN! Particle News product engineer here. Keeping up with the news is overwhelming in an age of information overload. Particle reimagines the experience by organizing articles into comprehensive "Stories," offering clear, concise summaries to quickly grasp what matters. Today, we reached the #1 spot in "Newspapers & Magazine" on the iOS App Store—and I thought I'd share a bit of our backstory. I've been connected to this team for a long time. About 20 years ago, I shared a house with our CTO and co-founder Marcel Molina. I helped him get started with programming. Since then, Marcel has had an extraordinary career—becoming a senior staff engineer at Twitter, where he helped build foundational features like Retweets, Notifications, and Lists, and later working at Tesla on manufacturing execution systems that scaled across Gigafactories. At Twitter, Marcel worked closely with our CEO and product visionary Sara Beykpour, who led initiatives like Twitter Blue, Twitter Video, and the experimental app twttr . Sara has a background in Software Engineering and Cognitive Science from the University of Waterloo and spent over a decade at Twitter in engineering and leadership roles. In late 2022, Sara and Marcel started prototyping a news app that could reduce the cognitive and emotional burden of staying informed—by using AI to help people understand more, faster. They were soon joined by a few other former Twitter colleagues who helped shape the early concept into a working iOS application. I joined about 15 months ago to contribute across the entire stack. Since then, I've helped design and build major iOS features, rewritten our public website on Cloudflare Workers, and implemented new functionality in our Go backend, which is driven by Google Cloud's Pub/Sub architecture. What Makes Particle News Different Particle helps you navigate the news effortlessly—leveraging AI to help you understand more, faster. Some highlights: • Personalized News – Your feed is tailored to your interests. You can follow specific people, places, and things so you never miss what matters to you. • Clear Summaries – Get a quick overview or dive deeper with detailed, structured context—summarized in natural language. • Perspective Tools – Features like "Opposite Sides" and our political spectrum chart let you explore stories through multiple lenses. • Interactive Q&A – Ask questions about any story and get concise answers with sources and citations. • Audio Summaries – Use the "Play" feature to listen to your feed, specific stories, or even select articles—great for hands-free or on-the-go moments. One of the things we're most proud of is how Particle supports publishers. We've partnered with outlets like Reuters, AFP, and Fortune to host some of their content via APIs. These partners get prominent placement, and their links are highlighted in gold to stand out. This model aims to drive traffic back to publishers and reward high-quality journalism, rather than just aggregating and commodifying it. Transparency is a core value: all sources are cited, generated answers are grounded in evidence, and we take real care to prevent AI hallucinations or misleading summaries. Despite negligible marketing spend, Particle has grown to the top of its category by focusing on engagement with early users and meaningful partnerships with the media ecosystem. Coming soon: weekday mini crosswords—a new feature designed by another longtime friend of ours from 20 years back who went on to work at Twitter, lead development on Firewatch, and release his own games independently. It's incredibly fun and rewarding to be building something meaningful with old and new friends. I feel lucky every day to work alongside some of the best product, design, and engineering minds on a project we hope will help people stay engaged with democracy without burning out. https://ift.tt/PaurkVG April 16, 2025 at 02:56AM
Show HN: Torque – A lightweight meta-assembler for any processor Hello everyone, I've been working on this project for the past few months. Torque is a meta-assembler: instead of having an instruction set built into the assembler, you use macros to build up a small language that decribes an instruction set and then you use that to write your program. It's designed to work for any microcontroller/processor architecture, you build from the bit level upwards so there aren't any assumptions around word widths, instruction formats, or endianness. I created Torque initially to write programs for a PIC microcontroller, after running into difficulties with the official assembler. I've also used it to write programs for the Z80 processor inside an old TRS-80 computer. Let me know if you try it out or have any questions! https://ift.tt/80nluMc April 16, 2025 at 03:16AM
Show HN: ActorCore – Stateful serverless framework that runs anywhere TL;DR: ActorCore is a stateful serverless framework that can be deployed to Rivet, Cloudflare, Bun, Node.js and more. It's the easiest way to build stateful, AI agent, collaborative, or local-first applications. Hey HN! A few months ago we launched Rivet Actors ( https://ift.tt/wWzAEGs ) as an open-source alternative to Cloudflare Durable Objects. Shortly after launching, we realized our goal is not to win over existing Durable Objects developers, but rather to grow the stateful serverless ecosystem. For context – "stateful serverless" is effectively the actor model with persistent state attached. Think Lambda functions with local storage & runs indefinitely. It's a a technology that’s gaining traction to ship faster, achieve higher performance, and outscale Postgres. The most widely used implementation is Cloudflare Durable Objects. In the process of talking to developers, we kept hearing three common concerns: - Vendor lock-in: Developers are hesitant to adopt a new programming model if there's no clear off-ramp. While it's straightforward to migrate a Postgres database, stateful serverless platforms like Rivet Actors or Durable Objects can feel locked-in due to lack of viable alternatives. - Ecosystem: Choosing a well-known database like Postgres comes with a mature ecosystem. Adopting a new model means rebuilding tooling and patterns from scratch. - Conceptual gap: Many developers have spent their entire careers designing systems with intentionally separated state and compute. A model that merges the two can feel backwards at first. After hearing these concerns again and again, we came to the conclusion that the best solution was to build a framework that works with as many platforms as possible to reduce lock-in (concern #1) and grow a shared ecosystem of tools (concern #2). It turns out, we already had a battle-tested framework built on top of Rivet Actors that we’ve been using for years. (It has a long, funky history beyond Rivet in gaming I won't get into here.) Thus, we split out the framework in to a new repo, added support for four platforms (easier said than done), and called it ActorCore. It gives developers multiple platforms to choose from when adopting stateful serverless and creates a foundation for a broader, cross-platform ecosystem. However, this still leaves concern #3: the conceptual gap. While this isn't something we can solve with a framework, I personally spend ~40% of my time working on docs, content, and examples to help resolve this. ActorCore is also panning out to be community-driven as hoped, which enables more people to try and share their experience with stateful serverless. Give ActorCore a try, read the roadmap, and let us know where we can improve documentation. If you're hesitant about trying stateful serverless, I'd love to learn more in the comments. Consider giving us a star on GitHub: https://ift.tt/mqTgs6e https://ift.tt/n1oubKL April 14, 2025 at 08:27PM
Show HN: Crystal, the most accurate U.S. gov't data search tool Hi everyone! We're relaunching Crystal, which lets you search and analyze 300k+ government datasets using plain English. For example, prompting "Air quality since 2020 in NYC" will find the most relevant datasets for you. We find it's way better than any search tool out there today, like data.gov. We're hoping anyone who uses public data as a resource, like researchers, consultants, journalists, etc. will find it helpful. Crystal is straightforward - it's in alpha, so there's only a few queries per person, and the app itself is in its infancy. We're invested in making this better for people, and we'd love feedback + beta signups - you can provide either via https://ift.tt/7rxpHei or down below! If you'd like to partner with us more closely or have other thoughts, please email us at cedric@crystal.info or ari@crystal.info https://ift.tt/s6IupCe April 13, 2025 at 11:53PM
Show HN: TripJam – Travel group chat with collaborative map and itinerary We built TripJam after being frustrated with planning trips in regular group chats and trying to organize information across multiple apps. It combines: - Group chat that keeps all travel discussions in one thread - Interactive maps where everyone can pin locations and add notes - Collaborative itineraries that sync with your calendar - AI travel assistant that suggests activities and helps optimize your plans This solves trying to coordinate information with everyone using messages, Google Maps, Google Docs, and travel guides. Everything syncs in real-time so everyone stays on the same page. We would love your feedback! https://tripjam.com https://tripjam.app April 13, 2025 at 01:55AM
Show HN: OctAPI – Visualize API Routes Directly in VS Code Started noticing issues while working with friends that I thought only I was encountering: spending too long manually adding routes to postman, getting lost looking for a single route in the sea of files and thought Hey, I can fix that (I think?) So OctAPI is a VSCode extension that automatically detects and displays API routes from a local project (currently supports Express.js, NestJS, Next.js, Koa, Flask, and FastAPI), it filters and groups them, generates a Postman export JSON file, and adds to favs. It doesn't run your code and it all stays in your machine A friend literally screamed when they were live testing it for me lol It's open source ( https://ift.tt/C9yevnD ) and here's its landing page ( https://ift.tt/mduJ18x ) I'm hoping to add custom tags, more frameworks support and even AI features. https://ift.tt/lx4k5ed April 13, 2025 at 01:48AM
Show HN: Atari Missile Command Game Built Using AI Gemini 2.5 Pro A modern HTML5 canvas remake of the classic Atari game from 1980. Defend your cities and missile bases from incoming enemy attacks using your missile launchers. Initially built using the Google Gemini 2.5 Pro AI LLM model. https://ift.tt/Uo6195F April 7, 2025 at 11:48AM
Show HN: A gallery of ChatGPT image styles for inspiration I found myself collecting a ton of different styles to explore and get inspiration for other photos so I built this to share the collection with others. The site was also completely coded using ChatGPT. https://imagestyles.ai April 11, 2025 at 11:10PM
Show HN: Repo Roast – a real-time feed of the funniest comments on GitHub Hey HN - I'm Mason, and I'm excited to share a fun side project I've been working on recently: Repo Roast. For me, Github often feels like a serious (and sometimes soulless) place. I built this website to showcase the human, silly side of developers. Repo Roast is built on top of LLM-powered GitHub analytics tooling we’re developing internally at Merit Systems [0]. One of the historically cited weak points for LLMs has been their sense of humor. I found that with the right prompt, at scale, they mostly can _identify_ humor pretty well. We experimented with a couple of different models to tune the cost/effectiveness and eventually landed on a strategy where we have gpt-4o-mini do a very light filter pass to reduce the number of calls to GPT-4o to do the actual humor scoring. Interestingly, our first prompt attempts ended up surfacing wayyy more aggressively NSFW content, which is funny that this happens despite all the censoring that OpenAI is doing. So far we have processed the last 90 days of historical comments and continuously process new ones every hour. We theoretically can run this against a wider historical window given there is sufficient interest to justify the costs! Repo Roast is in no way intended to make you a better or more productive dev. You can use it as a leaderboard or hiring tool (if you’re looking for personality), or just a way to distract yourself! If you've had any funny Github interactions, I'd love if you shared them below. Cheers! --Mason [0] https://ift.tt/4FUQo0V https://ift.tt/EjtTJiz April 10, 2025 at 12:40AM
Show HN: Aqua Voice 2 – Fast Voice Input for Mac and Windows Hey HN - It’s Finn and Jack from Aqua Voice ( https://withaqua.com ). Aqua is fast AI dictation for your desktop and our attempt to make voice a first-class input method. Video: https://ift.tt/1KoXbaP Try it here: https://ift.tt/wySV8g6 Finn is uber dyslexic and has been using dictation software since sixth grade. For over a decade, he’s been chasing a dream that never quite worked — using your voice instead of a keyboard. Our last post ( https://ift.tt/KhfQzjm ) about this seemed to resonate with the community - though it turned out that version of Aqua was a better demo than product. But it gave us (and others) a lot of good ideas about what should come next. Since then, we’ve remade Aqua from scratch for speed and usability. It now lives on your desktop, and it lets you talk into any text field -- Cursor, Gmail, Slack, even your terminal. It starts up in under 50ms, inserts text in about a second (sometimes as fast as 450ms), and has state-of-the-art accuracy. It does a lot more, but that’s the core. We’d love your feedback — and if you’ve got ideas for what voice should do next, let’s hear them! https://withaqua.com April 9, 2025 at 10:01PM
Show HN: I built a tool that deconstructs websites to reveal their tech stack Hi HN, I built https://unbuilt.app to solve a problem I frequently faced as a developer: identifying the technology stack behind websites, especially those using newer frameworks and tools. While existing solutions rely on pre-saved data or signature databases, Unbuilt performs a fresh analysis by actually loading and examining the website code in real-time. This means it can detect cutting-edge technologies that often get missed by other analyzers. Technical details: - Uses Playwright to visit sites and analyze their resources - Queue-based architecture for handling concurrent requests - Optimized patterns for detecting modern frameworks (Next.js, Vite, React Compiler, etc.) - Dual-layer caching system for both performance and result sharing The tool is completely open-source and free to use. There are no premium tiers or usage limits. I built it because I believe developers deserve better tools for understanding the web ecosystem. I'd appreciate any feedback, particularly on detection accuracy and the types of technologies you'd like to see added. If you're interested in contributing, all pattern detection logic is designed to be easily extensible. Link to repo: https://ift.tt/VBD4fuc https://unbuilt.app/ April 9, 2025 at 10:57PM
Show HN: My mom was unimpressed with my blog. What do you think? I recently launched my personal tech blog and proudly showed it to my mom. Her response? "It's... fine." Now I need your brutally honest feedback! Blog URL: https://simonaking.com Github: https://ift.tt/urvcanD PS: Every visitor gets my mom one step closer to understanding what I actually do for a living! https://simonaking.com/ April 9, 2025 at 11:30AM
Show HN: DrawDB – open-source online database diagram editor (a retro) One year ago I open-sourced my very first 'real' project and shared it here. I was a college student in my senior year and desperately looking for a job. At the time of sharing it i couldn't even afford a domain and naively let someone buy the one i had my eyes on lol. It's been a hell of a year with this blowing up, me moving to another country, and switching 2 jobs. In a year we somehow managed to hit 26k stars, grow a 1000+ person discord community, and support 37 languages. I couldn't be more grateful for the community that helped this grow, but now i don't know what direction to take this project in. All of this was an accident. But now I feel like I'm missing out on not using this success. I have been thinking of monetization options, but not sure if I wanna go down that route. I like the idea of it being free and available for everyone but also can't help but think of everything that could be done if committed full-time or even had a small team. I keep telling myself(and others) i'll do something if i meet a co-founder, but doubt and fear of blowing this up keeps back. How would you proceed? https://www.drawdb.app/ April 9, 2025 at 05:50AM
Show HN: A website/app to help manage your game library So, me (dev) and my friend (designer) have been building a website/mobile app to help users manage their game library (think MyAnimeList, but games) for a little over a year. We launched with a very basic set of features, and have been slowing expanding since then. All the code is open source, and most of the things we implemented were direct feedback from users (e.g. being able to import games from Steam/PSN, and the Posts feature). We don't show ads or have any kind of subscription. This is just a hobby project. Any feedback would be greatly appreciated, as honestly the hardest part is getting people to actually try it out. Link: https://gamenode.app You can also reach out to me via cassiolamarcksilvafreitas@gmail.com https://gamenode.app April 8, 2025 at 11:05PM
Show HN: Kahuna, the IndexedDB-Manager Webextension This has been my pet project and playground for a long time and has gone throught several framework changes, overhauls, etc.. Sometime last winter I realized that there has been a lot of progress since I started using plain javascript and lit-html and that it is time for a release. And then the hard work began... But anyone who has used the browser's own developer tools for working with IndexedDB databases will probably agree that there must be more convenient methods. And even though Kahuna can't do everything I want it to yet, it's certainly a good start. Since yesterday, the webextension is available in the Chrome Web Store [1] and as a Firefox Add-On [2]. Feedback, comments, bug reports, and feature requests are all more than welcome! [1] https://ift.tt/AejuU9I... [2] https://ift.tt/lI4eBuo... https://ift.tt/1kt6VPx April 7, 2025 at 11:01PM
Show HN: SQLTest.online: A free, interactive SQL practice platform I built Just launched: SQLTest.online - a free, hands-on platform for learning and practicing SQL. Features exercises covering basic syntax through advanced topics. This is a personal project I've been working on. https://sqltest.online April 7, 2025 at 10:05PM
Show HN: I created a ELI5 Blockchain glossary, with also a bit of interactivity The reason is simply that I'm learning blockchain and i found myself searching and hardly recalling terminology. So I started building a glossary (that slowly i'm making interactive) in which the terms are explained with ELI5 analogies. AI helped me with that. Hope you find it useful. You can contribute to the data set here: https://ift.tt/lQkqehA https://ift.tt/nBv7WZo April 6, 2025 at 10:40PM
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