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Apereo CAS vs Keycloak

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Apereo CASKeycloak
LanguageJavaJava
LicenceApache-2.0Apache-2.0
Stars11k37k
Latestv8.0.226.8.0
Last push2026-10-062026-10-06
Release cadenceabout 9 days between releasesabout 14 days between releases
Active contributors5+ commit authors on the default branch in the last 90 days97+ commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Okta. Alternatives to Okta →

    PartialApereo CASWeb single sign-on over CAS, SAML and OpenID Connect with MFA, common in universities.

    Full replacementKeycloakSSO over OpenID Connect and SAML, user federation with LDAP and Active Directory, and MFA.