Show HN: Play Chess. Earn coins. Build an army https://bit.ly/4gsQToV

Show HN: Play Chess. Earn coins. Build an army Hi there. I'm testing this hypothesis with new chess rules. These changes to the rules can be easily brought to offline games as well. https://bit.ly/4zjQxbU August 12, 2026 at 12:39PM

Show HN: KidScreen, a finite YouTube shelf chosen by parents https://bit.ly/3RKd2FZ

Show HN: KidScreen, a finite YouTube shelf chosen by parents https://bit.ly/4gcGEE3 August 12, 2026 at 12:44PM

Show HN: Woxi - Open-source Mathematica / Wolfram Language reimplementation https://bit.ly/45iHz0H

Show HN: Woxi - Open-source Mathematica / Wolfram Language reimplementation Woxi is an interpreter for the Wolfram Language written in Rust. It comes with Woxi Studio, a Mathematica-like GUI built with iced, but you can also use Woxi through a CLI, Jupyter kernel, Python package, npm package, or WASM module. Compared with wolframscript / Mathematica, the main differences are: - Free and open source - Very fast startup - Typically milliseconds rather than seconds for the Wolfram kernel, making Woxi practical for shell scripts, one-liners, and other short-lived processes - Embeddable - It can run in a browser via WASM or be embedded into another application as a scripting language A more detailed comparison with Mathematica is available here: https://bit.ly/45jDf1h . Conformance is ensured with ~26'000 unit tests and ~900 .wls script snapshot tests. The current focus is on fixing remaining edge cases, improving performance, and growing the community. If you use the Wolfram Language, I'd be particularly interested in feedback on compatibility and missing functionality. Contributions and bug reports are also very welcome: https://bit.ly/4m3tg7n https://bit.ly/3StnUrW August 12, 2026 at 11:06AM

Show HN: Kernelspace- interactive course on systems programming for LLM Serving https://bit.ly/4qeOQbB

Show HN: Kernelspace- interactive course on systems programming for LLM Serving Hi HN, *I* built kernelspace - a free and interactive course that takes a backend engineer (like me) with java/python experience to the systems level required to work on LLM serving at scale. (Mostly an attempt for me to understand what everyone's talking about lately and also an attempt at staying up to date to current tech - career wise). It has: 1. 68 Lessons across 9 tracks, with a rust-from-zero ramp. 2. 8 rust labs - BPE tokenizer, KV block manager, radix cache, batching scheduler, a toy executor 3. 9 simulators running in browser (wasm) - roofline model, KV cache pressure, continuous batching dynamics 4. Fleet week - a simulated prod serving fleet All progresss is local - there is no server (it's served from github pages, repo here https://bit.ly/4woWdyr ) Feedback appreciated, and contributions welcome. I want to make this a really good course for me (and everyone else like me). * (OK, I had sol and kimi on it for most part) https://bit.ly/4woWdOX August 12, 2026 at 02:20AM

Show HN: Insidedb, an interactive, animated explainer of database internals https://bit.ly/4qbGOjt

Show HN: Insidedb, an interactive, animated explainer of database internals https://bit.ly/3S1Ppsk August 11, 2026 at 02:19AM

Show HN: Opencodex, a free open-source coding agent for VSCode https://bit.ly/45kV2Fb

Show HN: Opencodex, a free open-source coding agent for VSCode https://bit.ly/4wmhZCX August 11, 2026 at 12:28AM

Show HN: AI Pulse a fake LED strip beside the macOS Dock that shows agent status https://bit.ly/4z98wl9

Show HN: AI Pulse a fake LED strip beside the macOS Dock that shows agent status Hi HN! I run a few Claude Code sessions in parallel and kept cmd-tabbing around just to find out one of them had been sitting on a permission prompt for ten minutes. There's a hardware gadget I liked (called SidePulse.io) so before waiting to get my shipment I built the software version instead :D I hope you like it and find it useful as I do! https://bit.ly/3RLXMbE August 10, 2026 at 11:07PM

Show HN: Gotcha- First on-device AI copilot for Android https://bit.ly/3TM127q

Show HN: Gotcha- First on-device AI copilot for Android https://bit.ly/4zcqPWI August 10, 2026 at 03:34AM

Show HN: Discord-delete – Delete all your Discord messages from your data export https://bit.ly/4cd6JS5

Show HN: Discord-delete – Delete all your Discord messages from your data export https://bit.ly/4fZ1Kpd August 10, 2026 at 01:06AM

Show HN: Albedo – single-file listenable document database in Zig https://bit.ly/45lGaGC

Show HN: Albedo – single-file listenable document database in Zig It's literally an indexable BSON array with query listening, replication and basic crash recovery. While working on my little projects I always felt a need for some sort of simple storage, where I can just have a single file. However sqlite with its' schemas and migrations always felt icky, like an overkill to have a single file db, but a whole folder set for migrations. JSON files would require to be loaded all at once and for something small but thick, like microservices that would hold their own state this would be a startup time cost. So idea came initially as an "indexable and partially loadable json object array". From the very beginning I've wrote it in zig, unlike my other projects where I flip flop with implementation language, for the sole reason that I wanted to be able to use it in as many places as physically possible. So it was something on level of C\C++, Rust and Zig. C langs are awesome, but I genuinely didn't enjoy them. After initial tries Rust felt overbearing, so by method of exclusion I landed on the lizard lang. I've been working on it for about a year, all while learning zig, relearning working with memory and adding new features. This whole time I've been mainly comparing it to and learning so much from sqlite, and eventually, after tuning, I feel like the performance is close enough for me (at least in my very basic benchmarks on my laptop). Now it's my personal little engine I use in my mobile apps through flutter plugin, in my small backends using bun ffi \ node native modules. Would be cool if it would solve someone's else pains. Happy to answer any questions https://bit.ly/45gdDSY August 10, 2026 at 12:03AM

Show HN: Inertia – Not your Grandfathers animation editor https://bit.ly/4hiTjHG

Show HN: Inertia – Not your Grandfathers animation editor https://bit.ly/3Umxb5y August 8, 2026 at 11:27PM

Show HN: Tura – Build agent that uses 80% less token and delivers better results https://bit.ly/3TKOhtQ

Show HN: Tura – Build agent that uses 80% less token and delivers better results https://bit.ly/4cbAJOd August 9, 2026 at 01:13AM

Show HN: ContentIQ – Evaluate and optimize content quality before publishing https://bit.ly/4wMIqmn

Show HN: ContentIQ – Evaluate and optimize content quality before publishing https://bit.ly/4q2ZcLx August 8, 2026 at 08:31AM

Show HN: CrossPlay - Games, puzzles and tools for your e-reader https://bit.ly/459QSA1

Show HN: CrossPlay - Games, puzzles and tools for your e-reader https://bit.ly/3SlHOoL August 7, 2026 at 11:36PM

Show HN: Modern C++ Build Tools for Module Feature https://bit.ly/4wcoZC8

Show HN: Modern C++ Build Tools for Module Feature Anyone like C++'s module features? Feel free to try MCPP and talk with me. https://bit.ly/4csc201 August 8, 2026 at 01:30AM

Show HN: Check if any of the $656M in unclaimed royalties at The MLC is yours https://bit.ly/45NjL5a

Show HN: Check if any of the $656M in unclaimed royalties at The MLC is yours https://bit.ly/4z4jXKD August 7, 2026 at 06:35PM

Show HN: La Vieja Contra El Dibu – Penalty Shootout Game vs. Dibu Martínez https://bit.ly/4buh6AQ

Show HN: La Vieja Contra El Dibu – Penalty Shootout Game vs. Dibu Martínez https://bit.ly/4qa2Weg August 7, 2026 at 02:53AM

Show HN: ARF – a record format for AI evaluation runs, with reproducible digests https://bit.ly/4fUjFgV

Show HN: ARF – a record format for AI evaluation runs, with reproducible digests https://bit.ly/4fHfW7v August 7, 2026 at 12:25AM

Show HN: Sift – MCP aggregator that exposes 2 tools instead of hundreds https://bit.ly/4q0k6Lf

Show HN: Sift – MCP aggregator that exposes 2 tools instead of hundreds https://bit.ly/4c5CU5T August 6, 2026 at 05:00AM

Show HN: Wallfacer – A terminal session manager for Claude Code, and more https://bit.ly/4xsLfJo

Show HN: Wallfacer – A terminal session manager for Claude Code, and more https://bit.ly/3TVmF59 August 6, 2026 at 04:52AM