Open Source Groupware Software
Found 13 self-hosted alternatives in this category.
Citadel
Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more
Colanode
Collaboration suite with real-time messaging, rich text pages, file management, and dynamic databases - built for offline work (alternative to Slack, Notion)
Cozy Cloud
Personal cloud where you can manage and sync your files, notes, contacts, passwords, and documents. ([Source Code](https://github.com/cozy/), [Clients](https://github.com/cozy/cozy-store))
Digipad
An online self-hosted application for creating collaborative digital notepads (Documentation in french)
Digistorm
Create collaborative surveys, quizzes, brainstorms, and word clouds (documentation in French). ([Demo](https://digistorm.app/), [Source Code](https://codeberg.org/ladigitale/digistorm))
Digiwall
Create multimedia collaborative walls for in-person or remote work (documentation in French)
egroupware
Software suite including calendars, address books, notepad, project management tools, client relationship management tools (CRM), knowledge management tools, a wiki and a CMS
Group Office
Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients
Openmeetings
Video conferencing, instant messaging, whiteboard, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming
SOGo
SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface. ([Demo](https://demo.sogo.nu/SOGo/), [Source Code](https://github.com/Alinto/sogo))
Tine
Software for digital collaboration in companies and organizations. From powerful groupware functionalities to clever add-ons, tine combines everything to make daily team collaboration easier
Tracim
Collaborative Platform for team collaboration: file,threads,notes,agenda,etc