Open-source projects tagged “collaboration”
Open-source and self-hostable projects tagged “collaboration” on GitHub, with license, free-edition limits and setup checked against official sources.
- Mattermost
A self-hostable team chat platform with channels, threads and integrations, popular for secure and technical teams.
Stars39kLast commitOct 10, 2026LicenseAGPL-3.0 - Nextcloud
A self-hosted file sync and sharing platform with an app store for calendar, contacts, mail and chat.
Stars37kLast commitOct 10, 2026LicenseAGPL-3.0
