Best Open-Source Collaboration Software

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

Open-source Airtable alternative for collaborative databases

Documenting architectural decisions for better software development

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

An open-source, all-in-one project management platform combining issues, chat, and docs.

Open-source Document Lifecycle Management platform

All-in-one workspace for notes and knowledge management

Open-source Kanban board with real‑time sync and markdown cards

Real-time collaborative document editor

Open-source collaborative wiki and documentation software

Copy/paste anything over the network.

Secure CommsOS for mission-critical operations

Secure, Simple and Scalable Video Conferences