Egroupware is a web based software for team collaboration, central data management and CRM: email client, online calendar, contact and task managem...

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eGroupWare alternatives


ONLYOFFICE Desktop Editors is an open-source office suite that combines text, spreadsheet and presentation editors, distributed under AGPL license ...

tags: business-collaboration calendar collaborative-spreadsheet corporate-wiki customer-relationship-manager
platform: Mac OS X Windows Linux Online Self-Hosted

Kolab Community

Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it ...

tags: activesync caldav carddav groupware imap
platform: Linux Online Self-Hosted


Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes wit...

tags: caldav groupware webmail-service
platform: Online Self-Hosted

Zimbra Collaboration Suite

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application availab...

tags: calendar groupware mail-server
platform: Linux Online

OX Open-Xchange

Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.Open-Xchange Server 6 is superior in the following areas:• Open-Xchange...

tags: calendar german groupware groupware-imap-ldap-calendar mail-server
platform: Linux Online

Microsoft Exchange Server

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of ser...

tags: chat-servers mail-server
platform: Windows Online


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 modern...

tags: calendar chat-clients groupware webmail-service
platform: Linux Online

Kerio Connect

Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to yo...

tags: antivirus backup-and-restore chat-servers contact-sync imap-transfers
platform: Mac OS X Windows Linux Online


OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

tags: address-book caldav calendar email-client3 groupware
platform: Mac OS X Windows Linux

Expanding Communication

Turnkey Solutions for the Enterprise Cloud

tags: caldav calendars cardav cloud-based cloud-computing
platform: Linux


iMail - Business and School Ultimate Free Mail SolutionWeb-client access, LAN or WAN self-hosted server, maintenance-free design.Fast, safe, heavy ...

tags: webmail-service self-hosted mailing-list mail-server web-client-access
platform: Windows Self-Hosted