OlumJS – Components are .html files, attributes are code or strings
Build reactive, performant web applications with OlumJS — a small Vue/React-inspired UI framework with signal-based reactivity, scoped CSS, and a native-HTML template syntax. 8 kb gzipped.
What it does
The fastest way to turn ideas into apps for hackathons and experiments. Start from an empty file and have a working app in under 5 minutes — no setup, no config. Watch it happen, then build your own. No hooks, no signals to unwrap, no directives to memorize. Mutate a plain object — Olum re-renders. < script > const state = { name: "world" , count: 0 }; </ script > < h1 > Hello { state. name } ! </ h1 > < input value = "{state.name}" oninput = "e => state.name = e.target.value" /> < button onclick = "state.count += 1" > clicks: { state. count } </ button > vs. Svelte Vue Solid React Angular Copy < script > let name = $state ( "world" ); let count = $state ( 0 ); </ script > < h1 > Hello {…from olumjs.top
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com