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Comparison · Infra & APIs

Apereo CAS vs Authelia

A side-by-side editorial comparison of Apereo CAS and Authelia — release velocity, themes, recent moves, and the top alternatives to consider.

Apereo CAS vs Authelia: at a glance

FeatureApereo CASAuthelia
SectorInfra & APIsInfra & APIs
Velocity score2.55.0
Sparks · 30d00
Top themesidentity, sso, open-source, release-candidatesauth, oidc, self-hosted, security
Last editorial update20d ago3h ago
WebsiteVisit →Visit →

What is Apereo CAS?

Apereo CAS opens an 8.1 line while 8.0 is still working through release candidates.

CAS is running a long release-candidate train. The 8.0.0 line reached RC6 in late June after RC4 and RC5 in spring, and 8.1.0-RC1 has now appeared in August. A 7.3.7.1 patch in June addressed a published OIDC vulnerability on the maintenance branch. The release entries themselves carry only navigation links and contributor credits, so feature detail is not visible here.

Read the full Apereo CAS trajectory →

What is Authelia?

Authelia's 4.39.x series is a continuous patch stream: five releases in nine days, no new features

Authelia is in a sustained maintenance phase on the 4.39.x branch. The project has shipped at least five releases since September 8 — all bug-fix patches targeting OIDC conformance, web UI edge cases, SMTP IPv6, Envoy authz path handling, and storage correctness. The release cadence is high but the content is narrow: there is no visible feature investment in the recent window.

Read the full Authelia trajectory →

Apereo CAS vs Authelia: editorial side-by-side

A
Apereo CAS
INFRA · APIS
2.5

Apereo CAS opens an 8.1 line while 8.0 is still working through release candidates.

◆ Current state

CAS is running a long release-candidate train. The 8.0.0 line reached RC6 in late June after RC4 and RC5 in spring, and 8.1.0-RC1 has now appeared in August. A 7.3.7.1 patch in June addressed a published OIDC vulnerability on the maintenance branch. The release entries themselves carry only navigation links and contributor credits, so feature detail is not visible here.

◆ Where it's heading

Two lines are moving at once, which suggests 8.0 is close enough to final that work has begun branching forward rather than that the RC train has stalled. The contributor lists stay small and consistent across releases - a handful of recurring maintainers - and security handling happens on the older supported branch, as it should.

◆ Prediction

An 8.0.0 final is the obvious next milestone given RC6 was three months ago and an 8.1 branch is already open. The release bodies do not describe features, so what it contains cannot be read from this feed.

A
Authelia
INFRA · APIS
5.0

Authelia's 4.39.x series is a continuous patch stream: five releases in nine days, no new features

◆ Current state

Authelia is in a sustained maintenance phase on the 4.39.x branch. The project has shipped at least five releases since September 8 — all bug-fix patches targeting OIDC conformance, web UI edge cases, SMTP IPv6, Envoy authz path handling, and storage correctness. The release cadence is high but the content is narrow: there is no visible feature investment in the recent window.

◆ Where it's heading

The pattern across these releases is OIDC stabilization — multiple entries address consent handling, resource indicators, and JWT grant correctness. Authelia appears to be closing out conformance gaps accumulated during earlier 4.39.x development rather than adding surface area. The active committer footprint is small (primarily @james-d-elliott), which keeps the pace sustainable but limits breadth.

◆ Prediction

Given the absence of feature releases since well before May 2026, a 4.40.x or 5.0 branch with new capabilities is likely being developed in parallel. The current stream is support-mode maintenance.

Alternatives to Apereo CAS and Authelia

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Apereo CAS or Authelia.

See all Apereo CAS alternatives → · See all Authelia alternatives →

Recent activity from Apereo CAS and Authelia

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 4h agoAutheliaAuthelia v4.39.28 patch release
  2. 2d agoAutheliav4.39.27
  3. 5d agoAutheliav4.39.26
  4. 7d agoAutheliav4.39.25
  5. 8d agoAutheliav4.39.24
  6. 9d agoAutheliav4.39.23
  7. 20d agoApereo CASv8.1.0-RC1
  8. 2mo agoApereo CASv8.0.0-RC6
  9. 2mo agoApereo CASPatch release for a published OIDC vulnerability
  10. 3mo agoApereo CASv8.0.0-RC5
  11. 4mo agoApereo CASv8.0.0-RC4

Frequently asked questions

What is the difference between Apereo CAS and Authelia?

They serve adjacent needs but don't currently overlap on shipped themes. Authelia is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Apereo CAS better than Authelia?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Authelia is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to Apereo CAS?

Top Apereo CAS alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Apereo CAS alternatives" section above for the current picks, or visit /alternatives/apereo-cas for the full list with editorial commentary on each.

What are the best alternatives to Authelia?

Top Authelia alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Authelia alternatives" section above for the current picks, or visit /alternatives/authelia for the full list with editorial commentary on each.