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Comparison · Collab
Capacities vs Komga
A side-by-side editorial comparison of Capacities and Komga — release velocity, themes, recent moves, and the top alternatives to consider.
Capacities vs Komga: at a glance
What is Capacities?
Capacities pairs an AI-connected knowledge hub with a real developer API.
Capacities has spent 2026 turning a personal knowledge tool into an AI-connected, programmable workspace. The past two months shipped API 2.0 for developers, AI Chat Connectors that let ChatGPT, Claude, and Cursor create and edit objects, plus steady polish across the editor, dates, and presentation mode. The newest release is a reliability roundup rather than a feature push.
What is Komga?
Komga is rewriting its web UI in the open, shipping the beta alongside the old one.
Komga's release cadence is dominated by NextUI, a ground-up rewrite of the web interface that landed in beta with 1.26.0 and is served next to the existing UI at /next rather than replacing it. The three patch releases that followed within 48 hours were almost entirely NextUI shakedown work — scroll restoration, selection behavior, stylesheets failing to load under Tomcat. Underneath the interface work the server keeps widening format support, with rar5 handling in plain Java and solid rar4 archives earlier in the summer.
Capacities vs Komga: editorial side-by-side
Capacities
6.3COLLAB
Capacities pairs an AI-connected knowledge hub with a real developer API.
◆ Current state
Capacities has spent 2026 turning a personal knowledge tool into an AI-connected, programmable workspace. The past two months shipped API 2.0 for developers, AI Chat Connectors that let ChatGPT, Claude, and Cursor create and edit objects, plus steady polish across the editor, dates, and presentation mode. The newest release is a reliability roundup rather than a feature push.
◆ Where it's heading
The direction is consistent: make a user's space reachable from both AI assistants and code, then harden it. Capability drops (API, connectors, bulk import, image analysis) now alternate with polish passes that stabilize the surface just expanded. Presentation mode is quietly maturing from a side feature into a first-class output.
◆ Prediction
Next likely move is deeper API coverage or an AI-connector upgrade that writes richer object types — extending the programmable surface it just opened rather than adding a net-new pillar.
Komga
6.3COLLAB
Komga is rewriting its web UI in the open, shipping the beta alongside the old one.
◆ Current state
Komga's release cadence is dominated by NextUI, a ground-up rewrite of the web interface that landed in beta with 1.26.0 and is served next to the existing UI at /next rather than replacing it. The three patch releases that followed within 48 hours were almost entirely NextUI shakedown work — scroll restoration, selection behavior, stylesheets failing to load under Tomcat. Underneath the interface work the server keeps widening format support, with rar5 handling in plain Java and solid rar4 archives earlier in the summer.
◆ Where it's heading
The project is running a long, deliberately cautious frontend migration: both UIs ship in the same binary, the feature gap is tracked publicly in an issue, and users opt in by URL. That arrangement should persist across several minor versions before the old WebUI is retired. The parallel v2 referential API suggests the rewrite is also being used to revise the server contract rather than only restyle the client.
◆ Prediction
Near-term releases should keep closing the NextUI feature gap issue by issue, with patch releases landing within days of each other. The old WebUI is unlikely to be removed before NextUI reaches parity and browser refresh stops falling back to it.
Alternatives to Capacities 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 Capacities or Komga.
Read the Docs
Read the Docs is rebuilding its build farm around uv and isolated builders, one week at a time.
CommaFeed
CommaFeed is patching its way through the attack surface a self-hosted reader inherits
SiYuan
SiYuan stabilises 3.8.1 after a seven-build beta run, all of it widening the agent surface it opened in 3.8.0
Hive
Hive ships in batches, and this one is all planning accuracy and admin control.
Teable
Teable ships daily, and the work has moved from grid features to platform governance.
See all Capacities alternatives → · See all Komga alternatives →
Recent activity from Capacities and Komga
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoKomgaTranslation updates and a release tooling fix
- 7d agoKomgaNextUI beta fixes: scroll, selection, and loading states
- 9d agoKomgaNextUI beta: a parallel rewrite of the Komga web interface ⚡
- 9d agoKomgaFix missing NextUI stylesheets when served from Tomcat
- 29d agoCapacitiesReliability polish across dates, tabs, editor, and presentation mode
- 1mo agoCapacitiesCapacities API 2.0, Weblink Analysis, and Presentation Mode ⚡
- 1mo agoKomgaSolid RAR4 archive support
- 1mo agoCapacitiesAI Chat Connectors 2.0 + Many improvements
- 3mo agoCapacitiesBulk Import for Everyone, Image Analysis for Pro, and Continuous Improvements
- 3mo agoCapacitiesRecurring Tasks and Choose Your Capacities AI Model Provider
- 3mo agoKomgaFixes for EPUB parsing, Kobo, KOReader, and OPDS2
- 3mo agoCapacitiesRelated Content, Deadlines, and Search 3.0
Frequently asked questions
What is the difference between Capacities and Komga?
They serve adjacent needs but don't currently overlap on shipped themes. Capacities and Komga are shipping at a similar cadence (velocity 6.3 vs 6.3, 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 Capacities better than Komga?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Capacities and Komga are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Capacities?
Top Capacities alternatives in Collab are ranked by recent ship velocity. Browse the "Capacities alternatives" section above for the current picks, or visit /alternatives/capacities 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.