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Comparison · Infra & APIs

authentik vs Apache CloudStack

A side-by-side editorial comparison of authentik and Apache CloudStack — release velocity, themes, recent moves, and the top alternatives to consider.

authentik vs Apache CloudStack: at a glance

FeatureauthentikApache CloudStack
SectorInfra & APIsInfra & APIs
Velocity score6.35.0
Sparks · 30d10
Top themesidentity-provider, enterprise-agents, endpoint-identity, oauth2iaas, lts-branches, maintenance-releases, cve-backports
Last editorial update5h ago1h ago
WebsiteVisit →Visit →

What is authentik?

authentik 2026.8 ships: Actors, domain-joined Agents, and a push past browser-mediated SSO

2026.8.0 is out, closing a seven-candidate train that ran through early August. The GA tag itself is the last cherry-pick batch — SCIM group membership removals, a proxy redirect that preserves query strings, session deletion on user deactivation — but the release it finalizes is where the substance lives: an Actors primitive in core, an enterprise Agent requiring a domain join and its own API scope, OAuth2 token exchange delegation, and a CAS source integration.

Read the full authentik trajectory →

What is Apache CloudStack?

CloudStack ships two LTS branches in lockstep and publishes nothing but pointers

Apache CloudStack maintains 4.20 and 4.22 as parallel LTS lines and tags them together — 4.20.3.1 and 4.22.1.1 were cut 49 minutes apart, both with bodies that say only which branch was tagged. The release entries themselves carry no content: the standard body is a set of links to release notes, install, upgrade, admin, and API docs hosted elsewhere. The one exception is the security releases, where the CVE list is written inline.

Read the full Apache CloudStack trajectory →

authentik vs Apache CloudStack: editorial side-by-side

A
authentik
INFRA · APIS
6.3

authentik 2026.8 ships: Actors, domain-joined Agents, and a push past browser-mediated SSO

◆ Current state

2026.8.0 is out, closing a seven-candidate train that ran through early August. The GA tag itself is the last cherry-pick batch — SCIM group membership removals, a proxy redirect that preserves query strings, session deletion on user deactivation — but the release it finalizes is where the substance lives: an Actors primitive in core, an enterprise Agent requiring a domain join and its own API scope, OAuth2 token exchange delegation, and a CAS source integration.

◆ Where it's heading

Two threads converge in this major. The identity surface keeps broadening at the protocol edge — CAS, WS-Fed, token exchange delegation, on-behalf-of — while the enterprise tier grows an endpoint story that reaches machines and devices rather than browser sessions. The RC train's shape reinforces it: six candidates fired in one day on CI and docs, then one heavy candidate carrying the features, then a fix-only close. That is release engineering hardened around a major, not a routine point release.

◆ Prediction

With Agents and Actors now GA rather than cherry-picks, the next branch should build out what they enable — device-conditioned policies or agent-brokered credentials — while 2026.8.x settles into backport patches.

A
Apache CloudStack
INFRA · APIS
5.0

CloudStack ships two LTS branches in lockstep and publishes nothing but pointers

◆ Current state

Apache CloudStack maintains 4.20 and 4.22 as parallel LTS lines and tags them together — 4.20.3.1 and 4.22.1.1 were cut 49 minutes apart, both with bodies that say only which branch was tagged. The release entries themselves carry no content: the standard body is a set of links to release notes, install, upgrade, admin, and API docs hosted elsewhere. The one exception is the security releases, where the CVE list is written inline.

◆ Where it's heading

The pattern is stable and unlikely to change: maintenance releases on both LTS lines, a regular release on its own cadence, and security fixes backported across every supported branch at once. Because the feed only becomes descriptive when an advisory forces detail into it, the visible record of this project skews heavily toward vulnerabilities — seven CVEs across backups, templates, and cross-tenant Proxmox access in May alone — and says almost nothing about features.

◆ Prediction

Expect the paired-branch tagging to continue, with the next informative entry being a security release rather than a feature one. Nothing in this feed supports a claim about where CloudStack's capabilities are heading; that information lives in the release notes it links to.

Alternatives to authentik and Apache CloudStack

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 authentik or Apache CloudStack.

See all authentik alternatives → · See all Apache CloudStack alternatives →

Recent activity from authentik and Apache CloudStack

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

  1. 1d agoauthentikauthentik 2026.8 goes GA with Actors and domain-joined Agents
  2. 1d agoApache CloudStackCloudStack 4.22.1.1 tags a fix branch with no published notes
  3. 1d agoApache CloudStackCloudStack 4.20.3.1 tags the parallel LTS fix branch
  4. 9d agoauthentikauthentik 2026.8.0-rc7 lands Actors, enterprise Agents, and CAS sources
  5. 16d agoauthentik2026.8.0-rc6: flaky test and CI metadata fixes
  6. 16d agoauthentik2026.8.0-rc5: release plumbing only
  7. 16d agoauthentik2026.8.0-rc4: fix-only candidate
  8. 16d agoauthentik2026.8.0-rc3: cherry-picked fixes and CI work
  9. 2mo agoApache CloudStackApache CloudStack 4.22.1.0 (LTS)
  10. 3mo agoApache CloudStackCloudStack 4.22.0.1 patches 7 CVEs across backups and templates
  11. 4mo agoApache CloudStackApache CloudStack 4.20.3.0 (LTS)
  12. 9mo agoApache CloudStackApache CloudStack 4.22.0.0 (LTS)

Frequently asked questions

What is the difference between authentik and Apache CloudStack?

They serve adjacent needs but don't currently overlap on shipped themes. authentik is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 authentik better than Apache CloudStack?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. authentik is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 authentik?

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

What are the best alternatives to Apache CloudStack?

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