Email, calendar, collaboration server with Web interface and lots of integrations. ([Source Code](https://github.com/zimbra)) `GPL-2.0/CPAL-1.0` `Java`
zimbra.com
Alternatives to
Cyrus IMAP
Best alternatives to Cyrus IMAP in 2026
Cyrus IMAP is "Email (IMAP/POP3), contacts and calendar server. ([Source Code](https://github.com/cyrusimap/cyrus-imapd)) `BSD-3-Clause-Attribution` `C`". If you are looking for an alternative to Cyrus IMAP in 2026 — whether for pricing, features or compatibility reasons — mySelectas has curated the 12 best options available. The most popular alternatives include: Dovecot, Zimbra. All these solutions are listed in the Informatique category.
Quick comparison of Cyrus IMAP alternatives
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FAQ about Cyrus IMAP alternatives
- What is the best alternative to Cyrus IMAP in 2026?
- Based on our selection, Zimbra Collaboration is the best alternative to Cyrus IMAP in 2026. Email, calendar, collaboration server with Web interface and lots of integrations. ([Source Code](https://github.com/zimbra)) `GPL-2.0/CPAL-1.0` `Java`. See our full ranking above to compare all options.
- Is Cyrus IMAP free?
- Cyrus IMAP is a paid tool. Several alternatives in our selection offer free or freemium versions.
- How many alternatives to Cyrus IMAP are there?
- mySelectas has listed 12 alternatives to Cyrus IMAP in the Informatique category. Our selection is updated regularly to include the best options available.