Top Open Source Collaborative Workspaces Tools in 2026
A curated collection of the 26 best free and open-source Collaborative Workspaces tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Tldraw
Free instant collaborative whiteboard for all devices
Stars49,987Last commit10d agoLicenseOpen Source
NocoBase
Open-source AI + no-code business system builder
Stars23,888Last commit11d agoLicenseOpen Sourcedraw.io
Free open-source diagramming tool for teams
Stars7,753Last commit15d agoLicenseApache-2.0
Workadventure
Immersive 2D virtual office & event platform
Stars5,734Last commit11d agoLicenseOpen Source
Teable
AI-powered spreadsheet for custom business apps
Stars21,721Last commit1mo agoLicenseOpen SourceSync-in
Secure, open-source platform for file storage, sharing, and collaboration. Host your data on your own infrastructure with full control and transparency.
Stars1,701Last commit1mo agoLicenseAGPL-3.0
Standard Notes
End-to-end encrypted notes app with unmatched privacy
Stars6,604Last commit12d agoLicenseAGPL-3.0
Rocket.Chat
Secure team chat with voice, video & AI
Stars46,033Last commit11d agoLicenseOpen Source
Quant-UX
Open source UX design and user testing tool
Stars2,690Last commit19d agoLicenseGPL-3.0Plane
AI-native project management for teams and agents
Stars58,381Last commit10d agoLicenseAGPL-3.0
Penpot
Open-source design platform for teams
Stars59,234Last commit10d agoLicenseMPL-2.0
Payload
Open-source headless CMS and app framework
Stars44,427Last commit11d agoLicenseMIT
Nextcloud
Self-hosted productivity platform for secure file sharing
Stars36,599Last commit10d agoLicenseAGPL-3.0
Mattermost
Secure collaboration platform for mission-critical teams
Stars38,913Last commit10d agoLicenseOpen Source
Macro Docs
Collaborative markdown docs with AI agents
Stars4,064Last commit11d agoLicenseAGPL-3.0
