Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.
- Recommended by
- 4
- GitHub stars
- 14k
- Licence
- Apache-2.0
- Language
- Go
- Last commit
- 29 Jul 2026
What people said
“Congratulations on the launch! Innovation in the Auth* space is really necessary. How do you plan on differentiating from other open source solutions, such as or?”
“Kratos - Cloud native Auth0 open-source alternative (self-hosted) (138 points)”
“Auth0 OSS alternative Ory Kratos now with passwordless and SMS support (203 points)”
“Ory Kratos v1.0 with passkeys, MFA and multi-region (146 points)”
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