A React Rich Text Editor that's block-based (Notion style) and extensible. Built on top of Prosemirror and Tiptap.

PartyKit simplifies developing multiplayer applications

🧩 Content editing tech stack for the web - BlockSuite is a toolkit for building editors and collaborative applications.

The best apps in the AI era aren’t solo experiences—they’re collaborative. Liveblocks provides customizable pre‑built features to make your product multiplayer, engaging, and AI‑ready. All without derailing your roadmap.

Open-source and local-first Slack and Notion alternative that puts you in control of your data

SyncedStore CRDT is an easy-to-use library for building live, collaborative applications that sync automatically.

The CRDT Yjs WebSocket backend for conflict-free real-time collaboration in your app.

Use Matrix as a backend for local-first applications with the Matrix-CRDT Yjs provider.

Yjs binding for Slate

SuperViz provides powerful SDKs and APIs that enable developers to easily integrate real-time features into web applications. Our platform accelerates development across various industries with robust, scalable infrastructure and a low-code approach.

Realtime Collaborate Editor with Embedded Compiler

Online Collaboration Excel

💬 cursor chat à la Figma for digital co-existing + presence

A local-first LaTeX web editor with real-time collaboration

Simple react hooks to manage multiplayer presence using Yjs

Real-time collaboration with Yjs on Cloudflare Workers using Durable Objects, eliminating Node.js dependencies. Inspired by y-websocket

Zustand middleware that enables sharing of state between clients via Yjs.

Multi-platform, type-safe realtime packages

🎈 PartyKit ⤫ Remix 💿

Socket IO Connector for Yjs (Inspired by y-websocket)