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Comparison · Collab
AFFiNE vs Capacities
A side-by-side editorial comparison of AFFiNE and Capacities — release velocity, themes, recent moves, and the top alternatives to consider.
AFFiNE vs Capacities: at a glance
What is AFFiNE?
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
AFFiNE ships a canary build almost daily, and nearly all of October has been dependency and infrastructure work. The newest, canary 915, bumps Apple's Swift Collections package to 1.7.4 for the native apps. Before it came a happy-dom code-execution CVE patch, payment-record repairs during a data migration, and non-root, read-only containers with multi-architecture Windows builds.
What is Capacities?
Capacities ships API 2.0, pivoting from self-contained PKM toward a connected AI memory layer
Capacities is a structured personal knowledge management tool shipping at monthly cadence. In the past 4 months it has added AI Chat Connectors (connecting the space to ChatGPT, Claude, and Cursor), a developer-facing API 2.0, weblink reader and analysis, PDF annotations, AI image generation, and configurable AI model providers. The combination describes a product moving from self-contained PKM to a node in a broader AI-augmented knowledge graph.
AFFiNE vs Capacities: editorial side-by-side
AFFiNE
5.0COLLAB
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
◆ Current state
AFFiNE ships a canary build almost daily, and nearly all of October has been dependency and infrastructure work. The newest, canary 915, bumps Apple's Swift Collections package to 1.7.4 for the native apps. Before it came a happy-dom code-execution CVE patch, payment-record repairs during a data migration, and non-root, read-only containers with multi-architecture Windows builds.
◆ Where it's heading
The feed reads like a team hardening the backend and toolchain ahead of a larger cutover: a payment-identity migration, stricter deployment defaults and steady Renovate bumps across web, server and native code. Feature work isn't visible in canaries this month; the last user-facing fix was October 12's blob-upload quota correction.
◆ Prediction
Expect the data migration to finish in the next canaries, followed by a stable release that bundles it; the entries don't show which user-facing feature is next.
Capacities
5.0COLLAB
Capacities ships API 2.0, pivoting from self-contained PKM toward a connected AI memory layer
◆ Current state
Capacities is a structured personal knowledge management tool shipping at monthly cadence. In the past 4 months it has added AI Chat Connectors (connecting the space to ChatGPT, Claude, and Cursor), a developer-facing API 2.0, weblink reader and analysis, PDF annotations, AI image generation, and configurable AI model providers. The combination describes a product moving from self-contained PKM to a node in a broader AI-augmented knowledge graph.
◆ Where it's heading
The consistent direction is making Capacities connectable — first via AI chat integrations, then a proper developer API, and now deeper object types and AI media generation. The new Pro+/Believer+ pricing add-ons indicate AI usage is growing enough to require metered capacity. The platform is accumulating capability surface faster than a traditional note-taking tool and faster than comparable PKM competitors.
◆ Prediction
The most likely next move is deeper API-to-AI-connector integration, letting third-party agents create and modify Capacities objects programmatically — the existing connector work is the precondition for functioning as an AI memory layer rather than just a note store.
Alternatives to AFFiNE and Capacities
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 AFFiNE or Capacities.
SiYuan
SiYuan 3.8.9 reaches RC, adding AI-agent extraction of images embedded in PDFs.
KACE
KACE extends its PHP2SHELL fix to the SDA deployment appliance, six days after disclosure.
Mattermost
Mattermost v12 puts user-scoped permissions, private models and audit trails on every agent action.
Teable
Teable's Structured Query v2 now reports across multi-hop relations, with a strict mode against SQL.
Readwise
Readwise splits its bundle into Reader-only and Highlights-only plans and renames its first app.
See all AFFiNE alternatives → · See all Capacities alternatives →
Recent activity from AFFiNE and Capacities
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoAFFiNECanary 909: Windows static-link build fix
- 3d agoAFFiNECanary 915: Swift Collections bumped to 1.7.4
- 4d agoAFFiNECanary 907: happy-dom v21 patches code-execution CVE
- 6d agoAFFiNECanary 908: payment-record and upload fixes for data migration
- 7d agoAFFiNECanary 909: hardened containers, multi-arch Windows builds
- 17d agoAFFiNEAFFiNE fixes blob uploads after storage quota changes
- 1mo agoCapacitiesRecent continuous improvements
- 1mo agoCapacitiesPDF reader view and annotations for Believers, Version History, more calendars, and AI image generation
- 2mo agoCapacitiesCapacities Pro+ and Believer+
- 3mo agoCapacitiesRecent continuous improvements — polish and reliability
- 3mo agoCapacitiesCapacities API 2.0, Weblink Analysis, and Presentation Mode ⚡
- 4mo agoCapacitiesAI Chat Connectors 2.0 + Many improvements
Frequently asked questions
What is the difference between AFFiNE and Capacities?
They serve adjacent needs but don't currently overlap on shipped themes. AFFiNE and Capacities 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 AFFiNE better than Capacities?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. AFFiNE and Capacities 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 Collab products to evaluate alongside.
What are the best alternatives to AFFiNE?
Top AFFiNE alternatives in Collab are ranked by recent ship velocity. Browse the "AFFiNE alternatives" section above for the current picks, or visit /alternatives/affine for the full list with editorial commentary on each.
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.