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Comparison · Collab

Capacities vs Double

A side-by-side editorial comparison of Capacities and Double — release velocity, themes, recent moves, and the top alternatives to consider.

Capacities vs Double: at a glance

FeatureCapacitiesDouble
SectorCollabCollab
Velocity score6.36.3
Sparks · 30d01
Top themespkm, ai-connectors, developer-api, presentation-modeaccounting-automation, ai-assistant, workpapers, accruals
Last editorial update28d ago5d ago
WebsiteVisit →Visit →

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.

Read the full Capacities trajectory →

What is Double?

Double is turning its accounting assistant into the way the work gets done

Double ships weekly, and nearly every release extends Ask Double rather than the surrounding application. In the last two months it has learned to build workpapers by reconciling accounts against supporting documents, import accruals, create and manage client metrics through the MCP and API, take voice input, and — in private beta — reach into Slack, Notion, and HubSpot. The non-assistant work fills in what firms need to trust that: role-based restrictions on editing client properties, and check transactions in AI Transactions.

Read the full Double trajectory →

Capacities vs Double: editorial side-by-side

C6.3

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.

D
Double
COLLAB
6.3

Double is turning its accounting assistant into the way the work gets done

◆ Current state

Double ships weekly, and nearly every release extends Ask Double rather than the surrounding application. In the last two months it has learned to build workpapers by reconciling accounts against supporting documents, import accruals, create and manage client metrics through the MCP and API, take voice input, and — in private beta — reach into Slack, Notion, and HubSpot. The non-assistant work fills in what firms need to trust that: role-based restrictions on editing client properties, and check transactions in AI Transactions.

◆ Where it's heading

The assistant is moving from answering questions to performing the billable work — tie-out, accrual setup, metric standardization across a whole book of clients. Each release pairs that with an access or permissions control, which is the pattern of a vendor that knows the objection is liability rather than capability. The accounting engine itself keeps advancing underneath, most recently with prepaid contracts paid in installments.

◆ Prediction

Given the review-and-signoff question these features raise, the likely next step is an approval or audit trail around what Ask Double produces rather than another task it can perform.

Alternatives to Capacities and Double

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 Double.

See all Capacities alternatives → · See all Double alternatives →

Recent activity from Capacities and Double

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 5d agoDoubleAccruals handles prepaid contracts paid in installments
  2. 12d agoDoubleRole-based restrictions on editing client properties
  3. 19d agoDoubleAsk Double reaches Slack, Notion and CRM data in private beta
  4. 26d agoDoubleVoice input for Ask Double
  5. 29d agoCapacitiesReliability polish across dates, tabs, editor, and presentation mode
  6. 1mo agoDoubleCreate and manage client metrics via Ask Double and MCP
  7. 1mo agoDoubleAsk Double builds workpapers by reconciling accounts to documents
  8. 1mo agoCapacitiesCapacities API 2.0, Weblink Analysis, and Presentation Mode
  9. 1mo agoCapacitiesAI Chat Connectors 2.0 + Many improvements
  10. 3mo agoCapacitiesBulk Import for Everyone, Image Analysis for Pro, and Continuous Improvements
  11. 3mo agoCapacitiesRecurring Tasks and Choose Your Capacities AI Model Provider
  12. 3mo agoCapacitiesRelated Content, Deadlines, and Search 3.0

Frequently asked questions

What is the difference between Capacities and Double?

They serve adjacent needs but don't currently overlap on shipped themes. Capacities and Double 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 Double?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Capacities and Double 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 Double?

Top Double alternatives in Collab are ranked by recent ship velocity. Browse the "Double alternatives" section above for the current picks, or visit /alternatives/double for the full list with editorial commentary on each.