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Comparison · Infra & APIs

authentik vs Sonarr

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

authentik vs Sonarr: at a glance

FeatureauthentikSonarr
SectorInfra & APIsInfra & APIs
Velocity score6.35.0
Sparks · 30d10
Top themesidentity-provider, enterprise-agents, endpoint-identity, oauth2maintenance, download-clients, jellyfin, bugfixes
Last editorial update7h ago9d 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 Sonarr?

Sonarr is in pure maintenance mode — six releases, not one feature.

Six point releases in this window and none of them carries a feature. The changes are an ordering fix so free space is not checked when another specification has already failed, unexpected database language values normalized to Unknown, basic auth repaired for qBittorrent, and a Jellyfin and Emby connection test with a new Jellyfin auth header. One release ships with no changelog entry at all.

Read the full Sonarr trajectory →

authentik vs Sonarr: 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.

S
Sonarr
INFRA · APIS
5.0

Sonarr is in pure maintenance mode — six releases, not one feature.

◆ Current state

Six point releases in this window and none of them carries a feature. The changes are an ordering fix so free space is not checked when another specification has already failed, unexpected database language values normalized to Unknown, basic auth repaired for qBittorrent, and a Jellyfin and Emby connection test with a new Jellyfin auth header. One release ships with no changelog entry at all.

◆ Where it's heading

This is a mature application on a stable branch, and the work is reactive: download clients and media servers change upstream, integrations break, Sonarr repairs them. The qBittorrent basic auth fix appearing on both the 4.0.18 and 4.0.19 lines shows a project deliberately keeping a maintenance branch alive rather than pushing everyone forward.

◆ Prediction

Nothing in these entries points to a feature cycle. Expect the same pattern — small point releases tracking upstream changes in download clients and media servers — to continue.

Alternatives to authentik and Sonarr

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 Sonarr.

See all authentik alternatives → · See all Sonarr alternatives →

Recent activity from authentik and Sonarr

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

  1. 1d agoauthentikauthentik 2026.8 goes GA with Actors and domain-joined Agents
  2. 9d agoSonarrSkip free space check when an earlier specification fails
  3. 9d agoauthentikauthentik 2026.8.0-rc7 lands Actors, enterprise Agents, and CAS sources
  4. 15d agoSonarrPoint release 4.0.19.2997 with no listed changes
  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. 24d agoSonarrJellyfin and Emby connection test, new Jellyfin auth header
  10. 25d agoSonarrUnexpected stored languages now treated as Unknown
  11. 1mo agoSonarrBasic auth fixed for qBittorrent
  12. 1mo agoSonarrqBittorrent basic auth fix backported to 4.0.18

Frequently asked questions

What is the difference between authentik and Sonarr?

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 Sonarr?

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 Sonarr?

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