compare
Apereo CAS vs authentik
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Apereo CAS | authentik |
|---|---|---|
| Language | Java | Python |
| Licence | Apache-2.0 | Other |
| Stars | 11k | 26k |
| Latest | v8.0.2 | version/2026.8.3 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 9 days between releases | about 4 days between releases |
| Active contributors | 5+ commit authors on the default branch in the last 90 days | 38+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
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 replacementauthentikSSO over OpenID Connect, SAML, LDAP and a forward-auth proxy, with visual flows.
Apereo CAS
- v8.1.0-RC22026-09-26Documentationpre-release
- v8.0.22026-09-26Documentation
- v7.3.8.32026-09-22Please see this post.
- v8.1.0-RC12026-08-28Documentationpre-release
- v7.3.8.22026-09-07Please see this post.
authentik
- version/2026.8.32026-09-17Release 2026.8.3
- version/2026.8.22026-09-09Release 2026.8.2
- version/2026.5.72026-09-09Release 2026.5.7
- version/2026.2.72026-09-09Release 2026.2.7
- version/2026.8.12026-09-01Release 2026.8.1
Apereo CAS
unsigned The latest release, v8.0.2, carries no signature GitHub could verify.
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authentik
unsigned The latest release, version/2026.8.3, carries no signature GitHub could verify.
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