Capacities

Capacities is a personal knowledge management tool built around typed objects rather than flat documents. Users create objects for books, people, meetings, projects, and ideas -- each with fields appropriate to its type. Links between objects create a knowledge graph, and AI features help query, summarize, and synthesize information across your stored knowledge. Researchers, writers, and knowledge workers building long-term personal archives use Capacities to organize information in a way that reflects how it actually connects, rather than filing everything in nested folders. A book note links to the author (a person object), the concepts it introduced (idea objects), and the projects it informed. The resulting network makes it easy to see relationships across years of accumulated notes. Capacities occupies the premium end of the PKM tool market alongside Tana, Obsidian, and Roam. Its visual interface and German engineering heritage give it a distinctive aesthetic and attention to detail. The daily note and writing tools integrate with the knowledge base, making it a complete thinking environment rather than just a storage system.