Best Free Collaboration Software

Open-source, self-hosted alternative to Trello, Asana, and Notion

A collaborative, markdown‑based knowledge base for growing teams

All-in-one open-source whiteboard tool

Open source project management that works for you, not against you

Create project documentation with Markdown

Open-source project management for small teams and freelancers

A painless self‑hosted Git service for teams

Free and open source project management software

A glossy Matrix collaboration client for the web

Safe home for all your data

Open-source Document Lifecycle Management platform

All-in-one workspace for notes and knowledge management

Real-time collaborative document editor

Open-source collaborative wiki and documentation software

A simple and intelligent task management app to help you plan your day.

Copy/paste anything over the network.

Secure, Simple and Scalable Video Conferences

Open-source Airtable alternative for collaborative databases

Documenting architectural decisions for better software development