Authentication & Single Sign-On Solutions
Implement secure authentication and SSO infrastructure. Browse self-hosted open source alternatives to Okta and Auth0 for identity management.
Hank
8,358966
Hanko is an open-source authentication and user management solution designed with privacy-first principles such as data minimalism and phishing resistance.
passkey-authentication
user-management-api
oauth
Last updated: 9/2/2025966 contributors
Keycloak
29,3227,570
Keycloak is an open-source Identity and Access Management (IAM) solution that makes it simple to add authentication and authorization to your applications and services.
identity-access-management
auth-sso
Last updated: 9/1/20257570 contributors