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Open Source Authentication & SSO Providers using PostHog

A curated collection of the best open source platforms providing authentication, Single Sign-On (SSO), and user management. using PostHog.

Zitadel

Secure, customizable identity infrastructure for developers

Stars
14,274
Forks
1,145
Last commit
22 hours ago

ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.

Open Source Alternative to:

Supabase

Stack Auth

Open-source authentication and user management platform

Stars
6,819
Forks
520
Last commit
10 hours ago

Stack Auth provides secure authentication, authorization, and user management for developers in just 5 minutes.

Open Source Alternative to:

Clerk

Authgear

Managed identity and access management for any app

Stars
1,878
Forks
121
Last commit
1 day ago

Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.

Open Source Alternative to:

Clerk

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Forks
Last commit

Stars
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Last commit

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