ory/kratos
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, OID…
Open source alternative to Auth0
Ory Kratos is an open source Go project by ory, created in May 2018. It has 13,927 stars and 1,201 forks on GitHub and is released under the Apache-2.0 license. Its most recent commit was on Jul 29, 2026, and it has 151 open issues, 2 of them labelled “good first issue”, which makes it a friendly place to start contributing. Its GitHub topics include identity, identity-management, user-management, and users.
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