Zoho
Free Personal
ZOHO Corporation offers online business, network, and IT infrastructure management applications, and software maintenance and support services.
Kolab Now
Commercial
Kolab Now is a web-based email and groupware service, based completely on free and open-source software.
Kopano
Open Source
Kopano is an open-source groupware application suite originally based on Zarafa.
Microsoft Exchange Server
Commercial
Microsoft Exchange Server is a mail server and calendaring server.
iRedMail
Open Source
iRedMail is a free, OpenSource mail server.
mailcow
Open Source
mailcow is a mail server suite.
Roundcube
Open Source
Roundcube is a web-based IMAP email client. Roundcube's most prominent feature is the pervasive use of Ajax technology.
Kolab Community
Open Source
Kolab is a free and open source groupware suite.
Horde
Open Source
Horde is a free web-based groupware. The components of this groupware rest on the Horde framework. This PHP-based framework provides all the elements required…
Zarafa
Commercial
Zarafa is an open-source groupware application.
OX Open-Xchange
Open Source
OX Open-Xchange is a web-based communication, collaboration and office productivity software.
Compare Zimbra Collaboration Suite with alternatives
Compare Zoho and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Roundcube and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Kolab Now and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Kolab Community and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Kopano and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Horde and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Microsoft Exchange Server and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare Zarafa and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare iRedMail and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare OX Open-Xchange and Zimbra Collaboration Suite and decide which is most suitable for you.
Compare mailcow and Zimbra Collaboration Suite and decide which is most suitable for you.