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

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