Top JS GitHub Repositories & Tools (2026)

Open-source AI sales OS — self-hosted CRM with native AI agents + WhatsApp (WAHA). Open alternative to Kommo, Octadesk & Intercom for any business that sells by chat. MCP-ready, multi-tenant, LGPD.

freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

Text-to-3D as code: language models write JavaScript programs that build game-ready GLBs, look at their own renders, and revise. Ships as an MCP server plus skills for any harness.

Sketch Material 3 Expressive screens in the browser and turn them into vibe-coding prompts.

Get your documents ready for gen AI

Composable, accessible components with thoughtful defaults. Build your own component library with code you can customize, extend, and make your own.

A DeepSeek coding agent harness: persistent shell, Ultra subagents, auto approval, Chrome MCP and session telemetry

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

High performance self-hosted photo and video management solution.

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

🇨🇭 A React renderer for Three.js

JSON.parse with hard limits on nesting depth, key count, string length and input size. Refuses parser bombs before they are allocated.

FastAPI framework, high performance, easy to learn, fast to code, ready for production

Node fetch with hard size, compression-ratio and time limits. Stops gzip bombs mid-stream.

The Open Source DocuSign Alternative.

An open-source, self-hostable PaaS alternative to Vercel, Heroku & Netlify that lets you easily deploy static sites, databases, full-stack applications and 280+ one-click services on your own servers.

Dynasty Warriors-style voxel action game in the browser: Zhao Yun vs 300 soldiers. Three.js, no build step.

Aesthetic, minimalist platform for learning Japanese inspired by Duolingo and Monkeytype, built with Next.js and sponsored by Vercel. Beginner-friendly with plenty of good first issues - all contributions are welcome!

Self-hosted family planner - tasks, calendars, shopping, meals, budget. Your data, your server.