speedtyper.dev by codicocodes

Real-time, room-based chat app with WebSockets — no sign-up, just pick a room ID and start chatting. Next.js 16 + React 19 + TypeScript frontend, Node.js ws backend. Maintained by dv2202 on GitHub, where it has earned 373 stars from the community.

An online code editor based on Next.js and NestJS, using Monaco Editor and Yjs for real-time collaborative editing and synchronization. Maintained by xun082 on GitHub, where it has earned 767 stars from the community.

Open source video conferencing app built on LiveKit Components, LiveKit Cloud, and Next.js. Maintained by livekit-examples on GitHub, where it has earned 941 stars from the community.