grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
Cost / License
- Freemium
- Open Source
Application types
Germany
EUPlatforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Self-Hosted
Open Source Kolab Alternatives for Linux
There are many alternatives to Kolab for Linux if you are looking for a replacement. The best open source Linux alternative is grommunio. If that doesn't suit you, our users have ranked more than 25 alternatives to Kolab and nine of them are open source and available for Linux so hopefully you can find a suitable replacement. Other interesting open source Linux alternatives to Kolab are OX App Suite, Citadel, OBM and EGroupware.
Alternatives list
15 grommunio alternatives
20 OX App Suite alternativesThe OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.
Cost / License
- Free
- Open Source
Application types
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
- 18 Citadel alternatives
Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant...
C 
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Linux
Web-based team collaboration suite combining email client, calendar, contact and task tools, CRM, project and file management, file sharing, trouble tickets, Rocket.Chat chat, and Collabora online editing. Offers open source, self-hosted, and SaaS options.
Cost / License
- Freemium
- Open Source (GPL-2.0)
Application types
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
WikiSuite™ is especially suited to knowledge-centric organizations and offers most (80%+) of the data and information management features all organizations need.
Cost / License
- Free
- Open Source
Platforms
- Linux
- Self-Hosted
Calcurse is a calendar and scheduling application for the command line. It helps keep track of events, appointments and everyday tasks. A configurable notification system reminds user of upcoming deadlines, the curses based interface can be customized to suit user needs and a...
+3
Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...
- W
Canada
