Capacities

★★★★☆4.3 / 5 editorial Freemium A free plan covers unlimited objects with core features. Paid plans from $9.99/mo on annual billing add the AI assistant and advanced properties.

A studio for your mind - objects, not files and folders

✓ Editor-verified listing — details reviewed by Grab AI Tool editors; pricing re-checked regularly.

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#note taking#knowledge management#second brain#daily notes#objects

What is Capacities?

Capacities organizes knowledge as typed objects - people, books, meetings, ideas - instead of files in folders, and every object type gets properties that fit it. Daily notes and backlinks connect everything into a personal knowledge graph, while an AI assistant chats with your notes, summarizes content and helps you write. It is a calm, beautifully designed alternative to Notion.

Media objects, web highlights and integrations with tools like Readwise feed material in, and full-text search plus an API and exports keep your data portable. Capacities is aimed at individuals - researchers, writers, students - rather than teams, and object-based thinking takes a week to click. Those who stay tend to praise how naturally information resurfaces compared with folder hierarchies.

Key Features

Object-based organization (people, books, meetings)
Daily notes with backlinks and graph
AI assistant that chats with your notes
Web highlights and media objects
API, exports and Readwise integration

Pros

Object model fits real knowledge better than folders
Lovely, calm design
Strong free plan for individuals

Cons

Individual-only; no real collaboration
Object thinking takes adjustment
Task management is intentionally light

Pricing

Model: Freemium
A free plan covers unlimited objects with core features. Paid plans from $9.99/mo on annual billing add the AI assistant and advanced properties.

Adding Up Your AI Bill?

If you pay for Capacities alongside other AI subscriptions, the monthly total adds up quietly. Tick every tool you pay for in our free AI Tool Cost Calculator to see your real monthly and yearly bill — and spot overlaps you can cut. Still choosing? Start with our guide on how to choose the right AI tool.