Colanode
GroupwareCollaboration suite with real-time messaging, rich text pages, file
Best Free Groupware for self-hosting
The 15 best Free groupware you can self-host, ranked by community traction.
Nextcloud Deck
GroupwareKanban-style project planning inside Nextcloud
Replaces Trello
Cozy
GroupwarePersonal cloud platform with contacts and calendar
Replaces Google Workspace
Twake Drive
GroupwareOpen-source collaborative file storage and workspace
Replaces Google Drive, Microsoft OneDrive
Openmeetings
GroupwareVideo conferencing, instant messaging, whiteboard, collaborative
DAViCal
GroupwareServer for sharing calendars and address books via DAV
Replaces Google Calendar, Microsoft Exchange
Kontact
GroupwareIntegrated personal information manager for KDE
Replaces Microsoft Outlook
Kolab Groupware
GroupwareOpen-source groupware server with mail and calendaring
Replaces Microsoft Exchange, Zimbra
Twake Workplace
GroupwareOpen-source digital workplace and collaboration suite
Replaces Microsoft Teams, Slack
Feng Office
GroupwareWeb-based collaboration and project management suite
Replaces Basecamp, Microsoft Project
Citadel
GroupwareAll-in-one groupware, mail and collaboration server
Replaces Microsoft Exchange, Microsoft 365
Cozy Contacts
GroupwareContacts management app for the Cozy personal server
Replaces Google Contacts
Digiwall
GroupwareCreate multimedia collaborative walls for in-person or remote work
Cozy Cloud
GroupwarePersonal cloud where you can manage and sync your files, notes,
Zimbra Collaboration
GroupwareEmail, calendar, collaboration server with Web interface and lots
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| Colanode | Under-an-hour setup | Medium | 512 MB | Apache-2.0 | 5,168 |
| Nextcloud Deck | Read-the-docs project | Easy | 512 MB | AGPL-3.0 | 1,427 |
| Cozy | Under-an-hour setup | Hard | 1,024 MB | AGPL-3.0 | 1,269 |
| Twake Drive | Under-an-hour setup | Hard | 2,048 MB | AGPL-3.0 | 989 |
| Openmeetings | Read-the-docs project | Medium | 512 MB | Apache-2.0 | 688 |
| DAViCal | Under-an-hour setup | Medium | 256 MB | GPL-2.0 | 200 |
| Kontact | Read-the-docs project | Medium | 512 MB | GPL-2.0 | 200 |
| Kolab Groupware | Under-an-hour setup | Hard | 2,048 MB | AGPL-3.0 | 200 |
| Twake Workplace | Under-an-hour setup | Medium | 2,048 MB | AGPL-3.0 | 196 |
| Feng Office | Read-the-docs project | Medium | 512 MB | AGPL-3.0 | 108 |
Quick picks
- Most adopted: Colanode (5,168 GitHub stars).
- Lightest footprint: DAViCal (from 256 MB RAM, against 2,048 MB for the heaviest here).
- Licensing: 8 of 15 use AGPL-3.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged Free within the groupware category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.