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Comparison · Infra & APIs
Harbor vs Sonarr
A side-by-side editorial comparison of Harbor and Sonarr — release velocity, themes, recent moves, and the top alternatives to consider.
Harbor vs Sonarr: at a glance
What is Harbor?
Harbor 2.16 RC1 brings official arm64 builds, custom project roles and smarter proxy caching.
Harbor spent September and October on security patch candidates and rolling back defaults that broke webhooks and legacy signer pulls. The first 2.16.0 candidate is the first feature release in that window. It adds full amd64 and arm64 builds, custom project roles in the UI, proxy-cache repository filters and referrer API proxying, and member audit events.
What is Sonarr?
Sonarr 5.0 builds add Trakt Smart Lists, OIDC Remember Me and more accessibility fixes.
Sonarr is publishing 5.0 test builds every few days. Recent ones added a Trakt Smart List import, an option to pass seed time to qBittorrent as an inactive-seeding limit, Remember Me for OIDC login and lower-memory media info migration. Accessibility work continues, with screen-reader feedback for form errors, named icon-only controls and an accessible Calendar.
Harbor vs Sonarr: editorial side-by-side
Harbor
5.0INFRA · APIS
Harbor 2.16 RC1 brings official arm64 builds, custom project roles and smarter proxy caching.
◆ Current state
Harbor spent September and October on security patch candidates and rolling back defaults that broke webhooks and legacy signer pulls. The first 2.16.0 candidate is the first feature release in that window. It adds full amd64 and arm64 builds, custom project roles in the UI, proxy-cache repository filters and referrer API proxying, and member audit events.
◆ Where it's heading
The 2.16 line shifts Harbor from patching toward enterprise registry features: finer RBAC, deeper audit trails, and a proxy cache that handles OCI referrers such as signatures and SBOMs. Multi-arch builds make Harbor a straightforward fit for arm64 clusters. Security fixes keep landing alongside, so the 2.14 and 2.15 patch lines will likely continue.
◆ Prediction
Expect further 2.16.0 release candidates before GA, plus more 2.14.x and 2.15.x patch tags. Whether custom roles get a matching API-level story is not yet clear from these notes.
Sonarr
5.0INFRA · APIS
Sonarr 5.0 builds add Trakt Smart Lists, OIDC Remember Me and more accessibility fixes.
◆ Current state
Sonarr is publishing 5.0 test builds every few days. Recent ones added a Trakt Smart List import, an option to pass seed time to qBittorrent as an inactive-seeding limit, Remember Me for OIDC login and lower-memory media info migration. Accessibility work continues, with screen-reader feedback for form errors, named icon-only controls and an accessible Calendar.
◆ Where it's heading
5.0 is in a polish phase: each build mixes small features from contributors with accessibility and UI fixes, after the earlier builds removed Basic Auth and tightened file safety. The pace suggests the team is converging on a stable 5.0.
◆ Prediction
Expect more accessibility and migration fixes before 5.0 reaches the stable channel; new large features look unlikely this late.
Alternatives to Harbor 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 Harbor or Sonarr.
Redocly
Redocly gives its docs MCP server its own name and public endpoint settings.
Drone CI
Drone now ships as Harness Open Source, and its releases are mostly code-hosting features.
Hatchet
Hatchet takes durable tasks serverless, with handlers for Cloudflare Workers, Vercel and Node.
Tolgee
Tolgee ships four patch releases in a day, mostly security bumps and branching fixes.
Payload CMS
Payload 4.0 beta 5 is a fix release with one adapter-facing breaking change.
See all Harbor alternatives → · See all Sonarr alternatives →
Recent activity from Harbor and Sonarr
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3h agoSonarrSonarr 5.0 build 2838: episode details redesign, unsaved-edit warning
- 22h agoHarbor2.16.0 RC1: arm64 builds, custom project roles, proxy-cache filters
- 2d agoSonarrSonarr 5.0 build 2800: Calendar accessibility, iCal fix
- 3d agoSonarrSonarr 5.0 build 2785: OIDC Remember Me, lighter migration
- 5d agoHarbor2.14.6 RC2: Go CVE fixes and decompression limit
- 7d agoSonarrSonarr 5.0 build 2742: Trakt Smart Lists, qBittorrent seed limits
- 9d agoSonarrSonarr 5.0 build adds responsive layout and screen-reader labels
- 10d agoSonarrSonarr 5.0 build validates database restores, adds type-ahead
- 15d agoHarbor2.14.6 RC1: private-network webhooks and legacy signer pulls restored
- 19d agoHarbor2.15.4 RC1: rolls back webhook and signer-pull restrictions
- 1mo agoHarbor2.15.3 RC2: security fixes for proxy cache, uploads and exports
- 1mo agoHarbor2.15.3 RC1: security fix batch
Frequently asked questions
What is the difference between Harbor and Sonarr?
They serve adjacent needs but don't currently overlap on shipped themes. Harbor and Sonarr are shipping at a similar cadence (velocity 5.0 vs 5.0, 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 Harbor better than Sonarr?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Harbor and Sonarr are shipping at a similar cadence (velocity 5.0 vs 5.0, 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 Harbor?
Top Harbor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Harbor alternatives" section above for the current picks, or visit /alternatives/harbor 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.