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Comparison · Collab
Capacities vs Wiki.js
A side-by-side editorial comparison of Capacities and Wiki.js — release velocity, themes, recent moves, and the top alternatives to consider.
Capacities vs Wiki.js: at a glance
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.
What is Wiki.js?
Wiki.js 3.0 beta ships an MCP server so AI agents can work against the wiki directly.
Wiki.js 3.0 is still a beta not meant for production, but beta.705 adds a built-in MCP server, refined personal access token scopes, page lifecycle rules with page ownership, a feedback board where reviewers manage ideas, and link completion in the markdown editor. Recent betas added live notes, math, access tokens, SCIM and Excalidraw collaboration.
Capacities vs Wiki.js: editorial side-by-side
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.
Wiki.js
6.3COLLAB
Wiki.js 3.0 beta ships an MCP server so AI agents can work against the wiki directly.
◆ Current state
Wiki.js 3.0 is still a beta not meant for production, but beta.705 adds a built-in MCP server, refined personal access token scopes, page lifecycle rules with page ownership, a feedback board where reviewers manage ideas, and link completion in the markdown editor. Recent betas added live notes, math, access tokens, SCIM and Excalidraw collaboration.
◆ Where it's heading
Each beta adds a piece that larger teams need: SSO and SCIM, governance through ownership and lifecycle rules, and now machine access through MCP and scoped tokens. 3.0 is becoming an AI-accessible knowledge base with enterprise controls rather than a straight successor to 2.x.
◆ Prediction
Expect MCP tools to be tied to the new PAT scopes and page rules, and the beta cadence to keep adding governance features before a release candidate.
Alternatives to Capacities and Wiki.js
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 Wiki.js.
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.
AFFiNE
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
Teable
Teable's Structured Query v2 now reports across multi-hop relations, with a strict mode against SQL.
See all Capacities alternatives → · See all Wiki.js alternatives →
Recent activity from Capacities and Wiki.js
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoWiki.jsWiki.js 3.0 beta adds MCP server and page lifecycle rules ⚡
- 9d agoWiki.jsWiki.js 3 beta adds live notes publishable to pages
- 13d agoWiki.jsWiki.js 3 beta adds math, access tokens; requires Postgres 17
- 16d agoWiki.jsWiki.js 3 beta adds draft recovery, slash menu, multi-replica git sync
- 18d agoWiki.js3.0 beta adds OIDC/SAML claim options and hardens v2 import
- 20d agoWiki.jsWiki.js 3.0 beta adds glossary auto-linking and non-Latin paths
- 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 Capacities and Wiki.js?
They serve adjacent needs but don't currently overlap on shipped themes. Wiki.js 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 Capacities better than Wiki.js?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Wiki.js 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 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 Wiki.js?
Top Wiki.js alternatives in Collab are ranked by recent ship velocity. Browse the "Wiki.js alternatives" section above for the current picks, or visit /alternatives/wikijs for the full list with editorial commentary on each.