goauthentik/authentik
The authentication glue you need.
Open source alternative to Auth0
authentik is an open source Python project by goauthentik, created in December 2019. It has 26,026 stars and 2,089 forks on GitHub. Its most recent commit was on Oct 21, 2026, and it has 768 open issues, 2 of them labelled “good first issue”, which makes it a friendly place to start contributing. Its GitHub topics include saml, saml-idp, saml-sp, and oauth2.
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