Kolab alternatives and similar software solutions

Based on the "Groupware" category.

SuiteCRM

8.4 8.3 Kolab VS SuiteCRM

SuiteCRM - Open source CRM for the world
Sogo

6.4 9.7 L1 Kolab VS Sogo

SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices.

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EspoCRM

6.3 9.9 Kolab VS EspoCRM

EspoCRM open source CRM application
Openmeetings

5.5 8.9 L2 Kolab VS Openmeetings

Mirror of Apache Openmeetings
Mayan EDMS

5.3 9.8 L3 Kolab VS Mayan EDMS

Free Open Source Document Management System (mirror, no pull request or issues)
Corteza

4.8 9.7 Kolab VS Corteza

CRM including a unified workspace, enterprise messaging and a low code environment for rapidly and securely delivering records-based management solutions.
Horde

4.3 0.0 L3 Kolab VS Horde

This is the old, deprecated, monolith Horde repository, archived here for historical reasons.
egroupware

3.7 9.7 L1 Kolab VS egroupware

Web based groupware server written in PHP, forum at https://help.egroupware.org/
HRCloud2

3.2 4.4 Kolab VS HRCloud2

A full-featured home hosted Cloud Drive, Personal Assistant, App Launcher, File Converter, Streamer, Share Tool & More!
Tine 2.0

3.2 9.9 Kolab VS Tine 2.0

Tine 2.0 main repository
Cozy Cloud

2.2 8.8 L1 Kolab VS Cozy Cloud

A cozy client application to configure and run cozy konnectors
BlueMind

- Kolab VS BlueMind

Groupware with email, calendar, addressbooks, exchange active sync, exchange "mapi" protocol support.
Zimbra Collaboration

- Kolab VS Zimbra Collaboration

Email, calendar, collaboration server with web interface and lots of integrations.
Kopano

- Kolab VS Kopano

Groupware suite including e-mail, calendars, tasks, todos and notes. Featuring a modern WebApp, DeskApp and mobile access over Z-Push/ActiveSync.