Capacities

What it does

Capacities is a note-taking app where people, books, projects, and ideas become objects instead of files in folders. You link objects to each other, and backlinks plus Related Content surface connections you may have missed. It is built for individuals who think for a living.

Capacities is a note-taking app built around objects rather than folders. A person, a book, or a project becomes an object with its own structure, and you link objects to each other as you write. Backlinks show every connection at a glance, and Related Content scans your notes to surface places you wrote about something but never linked. Your daily note works as an inbox, so you can capture first and organize later. The free plan covers unlimited spaces, objects, and blocks, with synchronization across devices and full import and export. Paid plans add an AI assistant, task management, smart queries, calendar integration, and a public API. Media uploads on the free plan are capped at 5 GB total, and AI features sit behind Pro or Believer with a monthly budget. The object model takes some time to learn if you are used to folders. Capacities is hosted in Europe and offers full export to standard formats.