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FreeRADIUS vs Kanidm: catalog facts
FreeRADIUS	Kanidm
Free Free and open source; commercial support is available from InkBridge Networks.	Free Free and open source.
Self-hosted, Command line	Linux, Self-hosted, Command line
Scales to tens of millions of users Modular design with many authentication back ends	OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins
Configuration is complex and text-file based Requires RADIUS and networking knowledge	Smaller ecosystem than long-established directory servers Requires running and securing your own server
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account 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 23, 2026

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