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Rauthy vs Ory Kratos: catalog facts
Rauthy	Ory Kratos
Free Free and open source.	Free Free to self-host; Ory also sells a hosted version through Ory Network.
Web, Self-hosted	Self-hosted
OIDC and OAuth 2 single sign-on PAM support for Linux logins	Supports passkeys, social sign-in, OIDC, SAML and TOTP API-first design leaves the login UI fully under your control
Smaller community than established IAM servers Requires running and maintaining your own server	Headless, so you must build or adopt your own login pages Aimed at developers rather than end users
Self-hosted	Self-hosted
Open 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.