Virtual whiteboard for sketching hand-drawn like diagrams

The communications platform that puts data protection first.

whiteboard SDK / infinite canvas SDK

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

A build system for development of composable software.

Etherpad: A modern really-real-time collaborative document editor.

Open-source feature management platform

⚡️⚡️⚡️Self-hosted collaborative bookmark manager to collect, organize, and preserve webpages, articles, and documents.

Univer is a full-stack framework for creating and editing spreadsheets, documents, and slides on both web and server.

HedgeDoc - Ideas grow better together

PartyKit simplifies developing multiplayer applications

Library for building distributed, real-time collaborative web 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.

Lightweight Google-searchable Slack alternative for Communities

Open source video conferencing system for tutors.

a Restful Api test tool

Twake is a secure open source collaboration platform to improve organizational productivity.

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