Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

Portable implementation of Web audio API

Production-grade engineering skills for AI coding agents.

OpenDaw — a free, open-source Digital Audio Workstation for Windows. Qt 6 UI, Tracktion Engine audio, MIDI piano roll, VST3 instruments, built-in effects, Claude AI assistant.

Elena is a simple, tiny library for building Progressive Web Components.

Typography and Opentype default stylesheet

Haptic feedback for the mobile web

A self-hosted, anti-social RSS reader.

Unofficial agent skills + reference guide that teach AI coding assistants to write Rails the 37signals way — extracted from Fizzy, Campfire, and DHH's code reviews

200+ production open source Rails apps & engines in one repo. Search across real codebases with AI agents to research architectural patterns.

🌘 Scope your inline style tags in pure vanilla CSS! Only 16 lines. No build. No dependencies.

FineTune, a macOS menu bar app for per-app volume control, multi-device output, audio routing, and 10-band EQ. Free and open-source alternative to SoundSource.

Light Weight "Headroom Style" scroll intent library that hides the site header on scroll down and shows on scroll up

Introspect underlying UIKit/AppKit components from SwiftUI

SuperCollider's scsynth audio engine as a Web AudioWorklet, JUCE-powered native server, embedded server and Erlang NIF

An attempt at a minimal version of Turbo Drive

Pure TypeScript media toolkit for reading, writing, and converting video and audio files, directly in the browser.

A light-weight library for declarative DOM actions using data attributes

Link Click Observer to capture all link clicks on a page

Lightweight JavaScript library that predicts user intent based on mouse movements and keyboard navigation. Perfect for smart prefetching. Also works for mobile!

An umbrella of radically different directions that we can interface with the web.

AeroSpace is an i3-like tiling window manager for macOS

MJML: the only framework that makes responsive-email easy

Easily scan and store your kids' drawings

Create Hotwire Native applications for your React/Vue/Svelte web apps.

StimulusX brings the power of reactive programming to Stimulus JS.

A podcast app built with Ruby on Rails and Hotwire

The utility-based animation framework for the web.