Open Source Collaboration & Communication Tools Projects

Open-source real-time collaborative text editor you can self-host.

Open-source video conferencing platform — free, secure, and self-hostable.

Low-latency, open-source voice chat built for gaming — self-host your own server with no subscription required.

Open-source project management platform — an alternative to Jira, Linear, Monday, and ClickUp.

Self-hosted office suite with real-time collaboration.

A beautiful terminal email client built with Go and Bubble Tea. An open source alternative to Superhuman and Outlook for the command line.

End-to-end encrypted collaborative office suite with zero-knowledge privacy.

Decentralized social network server that federates with the broader Fediverse — run your own instance instead of relying on Twitter/X.

Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

End-to-end encrypted group video calling built on the Matrix open protocol.

Open-source project management software — an alternative to Jira, Asana, Trello, and Monday.com.

Wiki.js | A modern and powerful wiki app built on Node.js

Straightforward realtime kanban boards for intuitive task tracking with dark mode and collaborative features.

Modern, lightweight self-hosted music server compatible with Subsonic/Airsonic clients — stream your music everywhere.

Open-source virtual whiteboard for creating hand-drawn style diagrams and sketches.

Open-source team chat with a unique topic-based threading model that makes it easy to follow multiple conversations.

Simple, open source team messaging platform

Federated link aggregator and community discussion platform — a decentralized, self-hostable alternative to Reddit.

Federated, decentralized video hosting platform built on ActivityPub.

The communications platform that puts data protection first.

Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.

Open-source Matrix client for secure, decentralized messaging, voice, and video — runs on your own server.

Open-source scheduling infrastructure — a self-hostable alternative to Calendly for booking meetings and appointments.

Open-source survey and experience management platform for product and customer research.

Open-source virtual classroom platform built for online education and webinars.