The best Hacker News stories from Show from the past day
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Show HN: Bun-sqlgen – Type-safe raw SQL for Bun, no ORM
Show HN: Neural Particle Automata
Neural CAs model self-organizing pattern formation on grids. Now the grid is gone. Each cell is an agentic particle that can move freely in space and change its state.<p>While each particle follows a simple shared rule, many together can grow complex morphologies or form intricate patterns. The resulting particle system as a whole can regenerate from damage and exhibits surprising emergent behavior.<p>Try cutting the lizard and watch it heal itself!
Show HN: TikZ Editor – WYSIWYG editor for figures in LaTeX
Hi all! TikZ is a widely-used LaTeX package for drawing figures in papers. It uses commands like \draw[->] (0,0) -- (1,2); to draw lines, shapes, text, etc. Academics usually code up their figures by hand, so there is lots of twiddling around with the coordinates and recompiling until things look nice. I guess it’s a bit like SVG, but it’s more code than markup, for example it has loops with \foreach.<p>I built an open-source WYSIWYG TikZ editor (available for web and desktop) that allows you to edit your TikZ source code visually by dragging and resizing elements. It simultaneously shows the source code and the rendered figure, and lets you edit either one while the two views stay in sync. I’m not aware of any other editors that are simultaneously source editors and WYSIWYG (even for editing SVG or HTML), and I’m quite pleased with how well the combination works.<p>The way the app is implemented is by parsing the TikZ code, and at all times keeping track of the exact source location of each object. Thereby, when a user drags an element to a new position, the app can override just the numbers in the coordinate without changing anything else in the code (such as line breaks or indentation).<p>This approach essentially required reimplementing a large fraction of TikZ, which is the kind of task that no human would ever want to do. I think building software that doesn’t exist yet because it would be impossibly tedious to code up is one of the great new possibilities thanks to coding agents, and it’s worth brainstorming for other examples. (This app was built almost entirely by Codex.)<p>Implementing the app came with lots of fun side quests, including building converters from SVG / pptx / ipe to TikZ, re-implementing the LaTeX hyphenation and line-breaking algorithm to support multi-line nodes, and making a color picker that uses the red!20!black color mixing notation used in LaTeX papers.
Show HN: I rebuilt the only parts of my IDE I use, in Rust, over a weekend
I don't know Rust.<p>Friday after work I realised that 90% of my IDE time now is just the commit/diff view — and even good IDEs feel heavy for that.<p>So over the weekend I built a dedicated native tool for just that. Kyde is a macOS git commit + diff editor with one goal: be fast, do Git well.<p>I'm curious whether anyone else mostly opens their IDE for git operations these days.<p>It's open source, and there's a signed app in Releases.
Show HN: I rebuilt the only parts of my IDE I use, in Rust, over a weekend
I don't know Rust.<p>Friday after work I realised that 90% of my IDE time now is just the commit/diff view — and even good IDEs feel heavy for that.<p>So over the weekend I built a dedicated native tool for just that. Kyde is a macOS git commit + diff editor with one goal: be fast, do Git well.<p>I'm curious whether anyone else mostly opens their IDE for git operations these days.<p>It's open source, and there's a signed app in Releases.
Show HN: Recall – Local project memory for Claude Code
Show HN: Recall – Local project memory for Claude Code
Show HN: Criterion Closet as a website – pull any of 1,247 films off the shelf
Show HN: Criterion Closet as a website – pull any of 1,247 films off the shelf
Show HN: Got sick of ads, so I made my own logic puzzle site
Show HN: Got sick of ads, so I made my own logic puzzle site
Show HN: Oak – Git alternative designed for agents
Oak is a version control system I've been working on designed for agents (<a href="https://oak.space" rel="nofollow">https://oak.space</a>). It improves the speed and context your agents need when working on serious projects. With virtual mounts, agents locally and in the cloud no longer need a full copy of a repo to get working. You can work on many tasks in parallel without needing to download everything or fight worktrees. Version control shouldn't waste you or your agents time. It should be fast, creative and fun to make things with agents.<p>Oak is still early in development. There's no Windows build and missing plenty of features (no CI, no issues, no comments). We still use GitHub Actions for building Oak now, but we've been fully bootstrapped on Oak with no Git backup for several months: <a href="https://oak.space/oak/oak" rel="nofollow">https://oak.space/oak/oak</a>.<p>Blog post: <a href="https://oak.space/blog#git-is-forever" rel="nofollow">https://oak.space/blog#git-is-forever</a><p>Docs: <a href="https://oak.space/docs" rel="nofollow">https://oak.space/docs</a>
Show HN: Oak – Git alternative designed for agents
Oak is a version control system I've been working on designed for agents (<a href="https://oak.space" rel="nofollow">https://oak.space</a>). It improves the speed and context your agents need when working on serious projects. With virtual mounts, agents locally and in the cloud no longer need a full copy of a repo to get working. You can work on many tasks in parallel without needing to download everything or fight worktrees. Version control shouldn't waste you or your agents time. It should be fast, creative and fun to make things with agents.<p>Oak is still early in development. There's no Windows build and missing plenty of features (no CI, no issues, no comments). We still use GitHub Actions for building Oak now, but we've been fully bootstrapped on Oak with no Git backup for several months: <a href="https://oak.space/oak/oak" rel="nofollow">https://oak.space/oak/oak</a>.<p>Blog post: <a href="https://oak.space/blog#git-is-forever" rel="nofollow">https://oak.space/blog#git-is-forever</a><p>Docs: <a href="https://oak.space/docs" rel="nofollow">https://oak.space/docs</a>
Show HN: CleverCrow: give tokens to your favorite projects
Howdy all. I'm Zack :wave:. I've been thinking about the problem of misguided AI pull requests and figured I'd throw a possible solution out there for feedback. Basically, CleverCrow lets supporters give tokens to a GitHub repo (or set of issues in that repo) for the maintainers to use to build/fix stuff. The fun implementation challenges have been around implementing the pooling dynamics and keeping the maintainers in charge while the backers are motivated to support their work.
Show HN: CleverCrow: give tokens to your favorite projects
Howdy all. I'm Zack :wave:. I've been thinking about the problem of misguided AI pull requests and figured I'd throw a possible solution out there for feedback. Basically, CleverCrow lets supporters give tokens to a GitHub repo (or set of issues in that repo) for the maintainers to use to build/fix stuff. The fun implementation challenges have been around implementing the pooling dynamics and keeping the maintainers in charge while the backers are motivated to support their work.
Show HN: Teach your kids perfect pitch
Show HN: Teach your kids perfect pitch
Show HN: Teach your kids perfect pitch
Show HN: My Windows XP portfolio with working Game Boy and iPod
I posted my portfolio here about a year ago (<a href="https://news.ycombinator.com/item?id=45154609">https://news.ycombinator.com/item?id=45154609</a>) and while there was a big response, it was very mixed! It'll probably be similar this time, but regardless of your thoughts about the concept, I think I've done a pretty good job creating one of the most nostalgic corners of the internet, especially with the latest additions.<p>It'll always be up for debate whether this is an effective way to get noticed as opposed to a standard, quick and easy portfolio, but I'll die on the hill that this is way more fun for both parties, every day of the week.
Show HN: TownSquare, a tiny presence layer for websites
<a href="https://cauenapier.com/blog/townsquare_release/" rel="nofollow">https://cauenapier.com/blog/townsquare_release/</a><p><a href="https://cauenapier.com/blog/townsquare/" rel="nofollow">https://cauenapier.com/blog/townsquare/</a>