Collaborative software or [groupware](https://en.wikipedia.org/wiki/Collaborative_software) is designed to help people working on a common task to attain their goals. Groupware often regroups multiple services such as file sharing, calendar/events management, address books... in a single, integrated application.
Collaborative software or [groupware](https://en.wikipedia.org/wiki/Collaborative_software) is designed to help people working on a common task to attain their goals. Groupware often regroups multiple services such as file sharing, calendar/events management, appointment scheduling, address books... in a single, integrated application.
_Related: [Booking and Scheduling](#booking-and-scheduling)_
- [Citadel](https://www.citadel.org/) - Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more. ([Source Code](https://www.citadel.org/source.html)) `GPL-3.0``C/Docker/Shell`
- [Colanode](https://colanode.com) - Collaboration suite with real-time messaging, rich text pages, file management, and dynamic databases - built for offline work (alternative to Slack, Notion). ([Source Code](https://github.com/colanode/colanode)) `Apache-2.0``K8S/Docker`