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mailcow vs Roundcube

The same facts for both, read from GitHub every night, and the relation a person reviewed.

mailcow vs Roundcube
Fact	mailcow	Roundcube
Language	JavaScript	PHP
Licence	GPL-3.0	GPL-3.0
Stars	14k	7.2k
Latest	2026-09a	1.7.4
Last push	2026-10-06	2026-10-02
Release cadence	about 18 days between releases	about 14 days between releases
Active contributors	11 commit authors on the default branch in the last 90 days	10 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace Google Workspace. Alternatives to Google Workspace →
PartialmailcowMail, calendars and contacts with SOGo webmail; no office suite.
PartialRoundcubeWebmail with an address book and plugins, on top of an IMAP and SMTP server you run.