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Comparison · Infra & APIs

Apereo CAS vs Nebula

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

Apereo CAS vs Nebula: at a glance

FeatureApereo CASNebula
SectorInfra & APIsInfra & APIs
Velocity score2.52.5
Sparks · 30d00
Top themesidentity, sso, open-source, release-candidatesmesh-vpn, overlay-network, ipv6, performance
Last editorial update1h ago1h ago
WebsiteVisit →Visit →

What is Apereo CAS?

Apereo CAS 8.1.0 reaches a third release candidate with 8.0.0 still not final.

CAS runs long release-candidate trains. 8.0.0 reached RC6 in June without a final in this feed, and the 8.1.0 line has since moved through RC1 in August, RC2 in September and RC3 in October. A 7.3.7.1 patch in June fixed a published OIDC vulnerability on the maintenance branch. The release entries list only documentation links and contributor credits, so their contents are not visible here.

Read the full Apereo CAS trajectory →

What is Nebula?

Nebula 1.12 adds optional offloading for throughput after a run of platform fixes.

Nebula is a peer-to-peer mesh VPN with its own certificate authority. Since v1.10.0 added IPv6 and multiple overlay addresses, releases have dealt with the fallout: v1.11.1 fixed an IPv6 firewall bypass, and v1.11.2 in September fixed IPv6 MTU on Windows, local address discovery on Android 11+, and checksums for traffic to a host's own IPv6 address on macOS. v1.12.0 on October 29 added optional UDP and TUN offloading, planned to become the default later, and stricter firewall rule parsing.

Read the full Nebula trajectory →

Apereo CAS vs Nebula: editorial side-by-side

A
Apereo CAS
INFRA · APIS
2.5

Apereo CAS 8.1.0 reaches a third release candidate with 8.0.0 still not final.

◆ Current state

CAS runs long release-candidate trains. 8.0.0 reached RC6 in June without a final in this feed, and the 8.1.0 line has since moved through RC1 in August, RC2 in September and RC3 in October. A 7.3.7.1 patch in June fixed a published OIDC vulnerability on the maintenance branch. The release entries list only documentation links and contributor credits, so their contents are not visible here.

◆ Where it's heading

Candidates arrive about monthly, and 8.1 has overtaken 8.0 as the active line. Without notes in the entries, the feed tracks timing rather than content.

◆ Prediction

An 8.1.0-RC4 or an 8.1.0 final is the next likely entry, on the same roughly monthly rhythm.

N
Nebula
INFRA · APIS
2.5

Nebula 1.12 adds optional offloading for throughput after a run of platform fixes.

◆ Current state

Nebula is a peer-to-peer mesh VPN with its own certificate authority. Since v1.10.0 added IPv6 and multiple overlay addresses, releases have dealt with the fallout: v1.11.1 fixed an IPv6 firewall bypass, and v1.11.2 in September fixed IPv6 MTU on Windows, local address discovery on Android 11+, and checksums for traffic to a host's own IPv6 address on macOS. v1.12.0 on October 29 added optional UDP and TUN offloading, planned to become the default later, and stricter firewall rule parsing.

◆ Where it's heading

The IPv6 work has moved from security fixes to per-platform correctness, and 1.12 turns to throughput. Offloading starting as opt-in, with a stated plan to make it default, sets up the next release cycle.

◆ Prediction

Expect 1.12.x patches for offloading edge cases, and a later release that turns offloading on by default as announced.

Alternatives to Apereo CAS and Nebula

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 Nebula.

See all Apereo CAS alternatives → · See all Nebula alternatives →

Recent activity from Apereo CAS and Nebula

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

  1. 4d agoNebulaRelease v1.12.0
  2. 9d agoApereo CASCAS 8.1.0 release candidate 3
  3. 1mo agoApereo CASCAS 8.1.0 release candidate 2
  4. 1mo agoNebulav1.11.2 fixes IPv6 MTU on Windows and address discovery on Android
  5. 2mo agoApereo CASv8.1.0-RC1
  6. 2mo agoNebulaIPv6 firewall bypass: unparsed protocols matched TCP/UDP rules
  7. 3mo agoNebulaBreaking: slog logging, corrected firewall reject/drop direction
  8. 4mo agoApereo CASv8.0.0-RC6
  9. 4mo agoApereo CASPatch release for a published OIDC vulnerability
  10. 5mo agoApereo CASv8.0.0-RC5
  11. 8mo agoNebulaP256 signature malleability allowed blocklist bypass
  12. 9mo agoNebulaFix panic in use_system_route_table introduced by the previous release

Frequently asked questions

What is the difference between Apereo CAS and Nebula?

They serve adjacent needs but don't currently overlap on shipped themes. Apereo CAS and Nebula are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). 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 Nebula?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Apereo CAS and Nebula are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). 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 Nebula?

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