Best Open Source collaboration Libraries
A curated list of the most popular GitHub repositories tagged with collaboration. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1excalidraw/excalidraw
Virtual whiteboard for sketching hand-drawn like diagrams
#2tldraw/tldraw
very good whiteboard infinite canvas SDK
#3RocketChat/Rocket.Chat
The Secure CommsOS™ for mission-critical operations
#4imputnet/cobalt
best way to save what you love
#5mattermost/mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
#6nextcloud/server
☁️ Nextcloud server, a safe home for all your data
#7mattermost-community/focalboard
Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
#8zulip/zulip
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
#9ether/etherpad
Etherpad: A modern really-real-time collaborative document editor.
#10teambit/bit
AI-powered development workspaces with reusable components, architectural clarity and zero overhead.
#11ether/etherpad-lite
Etherpad: A modern really-real-time collaborative document editor.
#12linkwarden/linkwarden
⚡️⚡️⚡️ Self-hosted collaborative bookmark manager to collect, read, annotate, and fully preserve what matters, all in one place.
#13Unleash/unleash
Open-source feature management platform
#14bigbluebutton/bigbluebutton
A complete web conferencing system for virtual classes and more!
#15hbons/SparkleShare
Share and collaborate by syncing with any Git repository instantly. Linux, macOS, and Windows
#16microsoft/FluidFramework
Library for building distributed, real-time collaborative web applications
#17miroslavpejic85/mirotalk
🚀 Open-source, self-hosted P2P WebRTC video conferencing for fast, private real-time communication. Create browser-based meeting rooms with no downloads or time limits, plus screen sharing, chat, whiteboard, recording, and collaboration.
#18openagents-org/openagents
OpenAgents - The collaboration OS for AI agents
#19Sync-in/server
Sync-in · Sovereign platform for file storage, sharing, synchronization, and collaboration.
#20Intermesh/groupoffice
Group Office groupware and CRM
#21smgdkngt/dobase
Open-source, self-hosted workspace with installable tools. Mail, boards, docs, chat, todos, files, calendar, and video rooms. Deploy with ONCE, Kamal, or Docker.