OSS built with JavaScript

What it does

A drag-and-drop web editor for building READMEs by choosing, arranging, and filling common sections, with no account requirement and a deliberately simple live-preview workflow.

What it does

A minimal, opinionated Mastodon web client that prioritizes a calmer reading experience over engagement-maximizing UI patterns.

What it does

A Chrome extension for fine-grained speed control of HTML5 video and audio across sites, with shortcuts, per-site defaults, and protection against players resetting playback speed.

What it does

A 2D HTML5 game framework combining WebGL, Canvas, scenes, and physics for browser delivery.

What it does

An open-source, cross-platform JavaScript runtime for servers, command-line tools, and development tooling.

What it does

A pluggable AST-based linter that identifies, reports, and fixes problematic patterns in JavaScript code.

What it does

A zero-dependency browser video editor whose entire timeline lives in one project.json, giving the UI, AI agents over MCP/REST, and direct file editing the same state model.

What it does

An open-source Chrome extension that combines 15 utilities including tab cleanup, cookie editing, CSS editing, YouTube cleanup, song recognition, picture-in-picture, JSON formatting, and AI summarization.

What it does

Vercel's framework for building full-stack web applications by extending React.

What it does

A JavaScript library for building web and native user interfaces from declarative components.

What it does

A UI compiler that turns declarative components into efficient JavaScript that updates the DOM.