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Rauthy vs LemonLDAP::NG: catalog facts
Rauthy	LemonLDAP::NG
Free Free and open source.	Free Free software with no licence cost.
Web, Self-hosted	Self-hosted
OIDC and OAuth 2 single sign-on PAM support for Linux logins	Supports CAS, SAML and OpenID Connect Can bridge between different SSO protocols
Smaller community than established IAM servers Requires running and maintaining your own server	Self-hosted server that needs administration Setup involves several components
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: GPL-2.0
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 October 1, 2026

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