authelia
The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™
apereo
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
workos
The world's best login box powered by WorkOS and Radix.
ory
Streamline your web application's authentication with Polis, an SSO service supporting SAML and OpenID Connect protocols. Beyond enterprise-grade Single Sign-On, it also supports Directory Sync via the SCIM 2.0 protocol for automatic user and group provisioning/de-provisioning.