Capacities
Organize notes as typed objects, people, books, projects, that link automatically, building a connected knowledge base without manual folders or tags.
The verdict on Capacities: Anyone who wants their notes organized as typed objects with real connections, not just pages in folders Capacities is for the note-taker who finds folders and tags inadequate but finds Notion too freeform for organizing knowledge. Pricing: Free (5GB) / ~$10-12/mo Pro (annual). Last reviewed: August 2026.
Best For
Anyone who wants their notes organized as typed objects with real connections, not just pages in folders
Standout Feature
AI surfaces related notes automatically, reducing the 'I know I captured this somewhere' problem
TL;DR
A genuinely different and thoughtful note-taking model, it demands more upfront structure thinking than just dumping notes.
Alternatives
Overview
Capacities is a personal knowledge management tool built around objects, people, books, articles, projects, notes, rather than pages and folders. Every note, highlight, and idea is tagged as a typed object with properties, and Capacities creates automatic bi-directional links between related objects. The AI features surface relevant notes when you're writing, answer questions across your entire knowledge base, and help you see patterns you didn't know were there. Used by researchers, writers, and knowledge workers who need their second brain to do more than store, to connect and resurface.
Our Take
The object model, typing every note as a person, book, project, or article with real properties, creates automatic connections that folder-based tools simply miss. The AI surfaces related notes to reduce the problem of knowing you captured something but not finding it. The honest tradeoff is that the object model requires upfront thinking about structure, you cannot just dump notes and sort them later. Obsidian has a larger plugin ecosystem; Capacities is the cleaner choice for anyone who wants meaningful connections without building them manually.
Key Features
- Object-based structure
- Auto bi-directional links
- AI knowledge queries
- Daily notes
- Web clipper
- Cross-device sync
- • Object model creates natural connections that folder-based tools miss
- • AI surfacing of related notes reduces 'I know I captured this' friction significantly
- • Daily note format with backlinks integrates well with structured note-taking workflows
- • Object model requires upfront thinking about structure vs. just dumping notes
- • Smaller ecosystem than Obsidian or Notion
People Also Use
Other Productivity tools builders reach for alongside Capacities.
Calendly
Sync calendars to remove the back-and-forth of booking meetings, now with AI-drafted meeting prep summaries and follow-up emails layered on top of core scheduling.
Monday.com
Plan projects and workflows visually across teams, with AI credits bundled into every tier for workflow building, meeting notetaking, and an AI sidekick assistant.
Microsoft Copilot
Ask questions, generate content, and get help with everyday tasks across your documents and web browsing, built into Windows, Edge, and Microsoft 365 apps.
Airtable AI
Describe an app in plain language and have Omni build the tables, automations, and interface for you. AI credits now bundle directly into every plan instead of a separate add-on.
ClickUp
Run tasks, docs, chat, and goals from one work management app. ClickUp Brain is now a paid add-on layer for automation, writing, and meeting notes on top of any plan.
Miro AI
Plan, run workshops, and build products on a collaborative online whiteboard, with AI credits powering diagram, summary, and content-generation features on every tier.
Workflows Using This Tool
Step-by-step playbooks that put Capacities to work.