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Axigen vs grommunio: catalog facts
Axigen	grommunio
Freemium A free edition is available; larger deployments need a paid licence.	Freemium Open source, with paid plans listed on the pricing page.
Web, Self-hosted	Linux, Web, Self-hosted
Free edition for small deployments Webmail and web administration included	Native MAPI, EWS and EAS support for Outlook and mobile clients Mail, calendars, chat, video and files on one platform
Proprietary software Main focus is on service providers and businesses	Running a groupware server requires administration skills Some features may depend on paid plans
Self-hosted	Self-hosted, Hosted service
Closed source	Open source
License not stated	License not stated
Not stated if an account is 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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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