Prowlarr
Prowlarr adds Trusted Networks and host validation, then moves to 2.7
Comparison · Collab
BookStack vs Capacities
A side-by-side editorial comparison of BookStack and Capacities — release velocity, themes, recent moves, and the top alternatives to consider.
BookStack vs Capacities: at a glance
What is BookStack?
BookStack's first feature release since May requires an APP_KEY and needed two quick patches
After four months of security patches on the 26.05 line, BookStack shipped v26.09 in late September: an interface layout system with theme support, API search within a book or chapter, a page scroll indicator, changelog messages on page API writes, and password changes that require the current password. It also stopped falling back to a default APP_KEY. Two patches followed within a month, one checking ZIP imports' real uncompressed size and one fixing comment and attachment exposure around the recycle bin and drafts.
What is Capacities?
Capacities adds whiteboards and a global graph to its object-based notes.
Capacities is a structured personal knowledge tool shipping a named release about monthly. The October release adds whiteboards and a global graph view, a visual layer over existing notes, plus a polish pass. September brought audio recording and transcription, bulk property editing and AI chats that can edit and act on objects. AI image generation and a Pro+ tier with a larger AI budget arrived in August.
BookStack vs Capacities: editorial side-by-side
BookStack
2.5COLLAB
BookStack's first feature release since May requires an APP_KEY and needed two quick patches
◆ Current state
After four months of security patches on the 26.05 line, BookStack shipped v26.09 in late September: an interface layout system with theme support, API search within a book or chapter, a page scroll indicator, changelog messages on page API writes, and password changes that require the current password. It also stopped falling back to a default APP_KEY. Two patches followed within a month, one checking ZIP imports' real uncompressed size and one fixing comment and attachment exposure around the recycle bin and drafts.
◆ Where it's heading
Security hardening keeps setting the cadence even after a feature release, with researcher reports credited in most patches. The new layout system opens the UI to customization through the theme system.
◆ Prediction
Further 26.09.x security releases are likely given the steady run of researcher reports; the entries give no date for the next feature release.
Capacities
2.5COLLAB
Capacities adds whiteboards and a global graph to its object-based notes.
◆ Current state
Capacities is a structured personal knowledge tool shipping a named release about monthly. The October release adds whiteboards and a global graph view, a visual layer over existing notes, plus a polish pass. September brought audio recording and transcription, bulk property editing and AI chats that can edit and act on objects. AI image generation and a Pro+ tier with a larger AI budget arrived in August.
◆ Where it's heading
Two threads run together: AI that acts inside the workspace (connectors, chats that edit, a paid AI budget) and better ways to see and capture what is already stored (graph, whiteboards, audio). API 2.0 in July opened the space to outside tools.
◆ Prediction
Expect more AI actions inside chats and further work on the graph and whiteboard surfaces; the entries do not say whether whiteboards will reach the API.
Alternatives to BookStack 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 BookStack or Capacities.
Lidarr
Lidarr starts a 3.2 pre-release while 3.1 gains host and network checks
Dropbox Sign
Dropbox Sign's API can now check a PDF's fields before a signature request goes out
Paperless-ngx
Paperless-ngx shipped seven releases in October, two of them for security
Slack
Slack lets companies manage Slackbot skills from code and CI, not only by hand
Read the Docs
Read the Docs moves builds to Python 3.14 and Ubuntu 26.04 by default.
See all BookStack alternatives → · See all Capacities alternatives →
Recent activity from BookStack and Capacities
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoCapacitiesWhiteboards, global graph view, and polish on the basics
- 13d agoBookStackBookStack 26.09.2 closes recycle-bin and draft attachment leaks
- 1mo agoBookStackBookStack 26.09.1 checks real ZIP size and fixes chapter permissions
- 1mo agoBookStackBookStack 26.09 adds a UI layout system and scoped search API
- 1mo agoCapacitiesAudio recording and transcription, a calmer desktop, bulk property editing, and smarter AI chats
- 1mo agoBookStackBookStack 26.05.5 fixes social login account mismatches
- 1mo agoCapacitiesv1.70.2: Index Card padding and calendar fixes
- 2mo agoCapacitiesPDF reader view and annotations for Believers, Version History, more calendars, and AI image generation
- 2mo agoBookStackSecurity release closes a ZIP-import RCE and permission bypasses
- 2mo agoCapacitiesCapacities Pro+ and Believer+
- 3mo agoBookStackSecurity release fixes five issues including auth matching
- 3mo agoCapacitiesRecent continuous improvements — polish and reliability
Frequently asked questions
What is the difference between BookStack and Capacities?
They serve adjacent needs but don't currently overlap on shipped themes. BookStack and Capacities are shipping at a similar cadence (velocity 2.5 vs 2.5, 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 BookStack better than Capacities?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. BookStack and Capacities are shipping at a similar cadence (velocity 2.5 vs 2.5, 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 BookStack?
Top BookStack alternatives in Collab are ranked by recent ship velocity. Browse the "BookStack alternatives" section above for the current picks, or visit /alternatives/bookstack 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.