Best open-source JavaScript projects

Claude Code skills that have Claude Opus 5.5 build complete videos in code, one skill per visual style: hand-painted animation and kinetic-typography reels.

Chrome extension that detects which anti-bot systems, CAPTCHAs and fingerprinting techniques a website uses, with confidence scores.

A reference example of a Claude Code project setup, showing CLAUDE.md, hooks, skills, agents, slash commands, MCP servers and GitHub Actions workflows.

Open-source whiteboard app built on the tldraw engine, aimed at real-time team collaboration and creative sketching.

A local MCP server that routes prompts to ChatGPT, Claude, Gemini and Perplexity browser sessions or BYOK/local model endpoints for use in coding editors.

A Claude Code plugin with self-correcting memory, persistent FTS5 research wikis, and skills, commands and hooks for AI-assisted coding workflows.

Browser extension that automatically answers cookie consent banners using your saved privacy preferences, covering 200+ consent management platforms.

htmx lets you issue AJAX, WebSocket, and Server-Sent Events requests and swap page content directly from HTML attributes, with no custom JavaScript.

An MCP server that connects Claude Code to your locally running TradingView Desktop app for AI-assisted chart analysis and Pine Script work.

A browser app that redraws any photo as one continuous line and films the drawing being made, with 3D print export.

An AI agent skill that turns travel ideas into day-by-day itineraries and shareable, map-based travel journals, with optional hotel and flight search.

A local-first AI office assistant that turns one request into editable PPTX, DOCX, XLSX and HTML files, using your own model keys or local models.

Pipedream is a hosted integration platform for building event-driven automations that connect APIs with pre-built steps or custom Node.js, Python, Go, or Bash code.

A lightweight web workspace for AI image generation, splitting images into transparent layers, and layer-based editing for covers, posters and social graphics.

A browser-based 3D globe that overlays live public data such as flights, ships, satellites, earthquakes, fires and public cameras.