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Axigen vs Cyrus IMAP: catalog facts
Axigen	Cyrus IMAP
Freemium A free edition is available; larger deployments need a paid licence.	Free Free and open source.
Web, Self-hosted	Linux, Self-hosted
Free edition for small deployments Webmail and web administration included	Mail, calendars and contacts in one server JMAP support alongside IMAP
Proprietary software Main focus is on service providers and businesses	Complex to configure compared with all-in-one servers No bundled webmail
Self-hosted	Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.