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Comparison · Collab
Radarr vs Komga
A side-by-side editorial comparison of Radarr and Komga — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:maintenance
Radarr vs Komga: at a glance
What is Radarr?
Radarr is in steady maintenance, with one new download client the only visible addition
Radarr ships small builds on parallel develop and master branches, typically a handful of commits each. The recent stream is almost entirely correctness work — HTTP request disposal, deferred JSON deserialisation, malformed cookie handling, qBittorrent basic auth, an SQLite busy timeout raised to 1000ms — plus translation updates. The single functional addition is an RQBit download client.
What is Komga?
A mature media server whose releases are format edge cases and Kobo plumbing.
Komga moves between minor releases slowly — 1.24.0 in January, 1.25.0 in late June — with patch releases in between that are almost entirely EPUB parsing fixes. The two features worth naming are solid RAR4 archive support in 1.25.0 and an SSE heartbeat event in 1.24.0. The rest is fixes to EPUB table-of-contents handling, fixed-layout detection, and the Kobo and OPDS2 integration surfaces.
Radarr vs Komga: editorial side-by-side
Radarr
5.0COLLAB
Radarr is in steady maintenance, with one new download client the only visible addition
◆ Current state
Radarr ships small builds on parallel develop and master branches, typically a handful of commits each. The recent stream is almost entirely correctness work — HTTP request disposal, deferred JSON deserialisation, malformed cookie handling, qBittorrent basic auth, an SQLite busy timeout raised to 1000ms — plus translation updates. The single functional addition is an RQBit download client.
◆ Where it's heading
Version numbers are moving quickly through 6.1 to 6.4, but the changes behind them are patch-sized; the major.minor increments track branch mechanics rather than feature milestones. The work that is happening targets reliability under load and with third-party clients, which is where a long-running background service accumulates problems.
◆ Prediction
Expect the develop-branch build cadence to continue with further download client and indexer compatibility fixes; nothing here signals a larger release in preparation.
Komga
0.0COLLAB
A mature media server whose releases are format edge cases and Kobo plumbing.
◆ Current state
Komga moves between minor releases slowly — 1.24.0 in January, 1.25.0 in late June — with patch releases in between that are almost entirely EPUB parsing fixes. The two features worth naming are solid RAR4 archive support in 1.25.0 and an SSE heartbeat event in 1.24.0. The rest is fixes to EPUB table-of-contents handling, fixed-layout detection, and the Kobo and OPDS2 integration surfaces.
◆ Where it's heading
The work concentrates where a self-hosted library server actually breaks: malformed EPUBs, archive formats readers assume will just open, and the sync protocols third-party devices speak. Kobo integration keeps taking attention — content restriction enforcement, proxying raw request bodies to the Kobo store — which suggests e-reader compatibility is where the user pressure sits. Translation batches from Weblate appear in most releases.
◆ Prediction
Expect more format-tolerance work on EPUB and archive handling, with the Kobo and KOReader integrations continuing to absorb the fixes that a mature library server accumulates.
Alternatives to Radarr and Komga
Other Collab 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 Radarr or Komga.
Readarr
Six releases of small fixes and translations, then nothing since June 2025.
LibrePhotos
Five repos became one, and the authorization model got a public-safe user view.
Prowlarr
A steady indexer-maintenance cadence: fixes, definitions, translations, repeat.
noVNC
noVNC ships about once a year, and its betas and finals carry identical notes.
Lidarr
Lidarr's release notes still tell you not to update Radarr — the fork's seams are showing.
See all Radarr alternatives → · See all Komga alternatives →
Recent activity from Radarr and Komga
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoRadarrRadarr 6.4.1: RQBit download client support
- 10d agoRadarrRadarr 6.4.0 build 10540: HTTP and JSON handling cleanup
- 17d agoRadarrRadarr 6.4.0 develop bump and cookie handling fix
- 24d agoRadarrRadarr 6.3.0 master build: translations and CI fix
- 25d agoRadarrRadarr 6.3.0 develop build: streaming extension probe fix
- 1mo agoKomga1.25.0 adds solid RAR4 support and enforces Kobo content restrictions
- 1mo agoRadarrRadarr 6.2.1: qBittorrent basic auth and SQLite timeout fixes
- 3mo agoKomga1.24.4 fixes EPUB tables of contents and Kobo request proxying
- 4mo agoKomga1.24.3 fixes an EPUB reader that would not load
- 4mo agoKomga1.24.2 improves EPUB fallbacks and Docker volume handling
- 6mo agoKomga1.24.1: lenient fixed-layout detection and translation updates
- 6mo agoKomga1.24.0 adds SSE heartbeats and EPUB images in the spine
Frequently asked questions
What is the difference between Radarr and Komga?
Both compete on the same themes — maintenance — within Collab. Radarr is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Radarr better than Komga?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Radarr is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Radarr?
Top Radarr alternatives in Collab are ranked by recent ship velocity. Browse the "Radarr alternatives" section above for the current picks, or visit /alternatives/radarr for the full list with editorial commentary on each.
What are the best alternatives to Komga?
Top Komga alternatives in Collab are ranked by recent ship velocity. Browse the "Komga alternatives" section above for the current picks, or visit /alternatives/komga for the full list with editorial commentary on each.