Best Open Source Authentication & SSO

Authelia Logo

Authelia

Single sign-on and two-factor authentication portal

★ 26,560 Updated: Feb 2026 Status: Slowing
Authentik Logo

Authentik

Open-source Identity Provider

★ 19,977 Updated: Feb 2026 Status: Slowing
SuperTokens Logo

SuperTokens

Open source alternative to Auth0 and Cognito.

★ 15,333 Updated: Oct 2026 Status: Active
Aegis Logo

Aegis

Free and secure 2FA app for Android

★ 11,858 Updated: Jan 2026 Status: Slowing
Cerbos Logo

Cerbos

Open-source authorization solution

★ 4,205 Updated: Feb 2026 Status: Slowing
AuthPass Logo

AuthPass

Password manager for mobile and desktop

★ 2,610 Updated: Jan 2026 Status: Slowing