Side-by-side comparison of AI visibility scores, market position, and capabilities
Object-based personal knowledge management tool for connecting notes, people, books, and ideas into a personal database.
Capacities is a Berlin-based personal knowledge management company that builds a note-taking and knowledge organization tool based on an object model rather than a document model. Where traditional note apps organize information in hierarchical folders, Capacities allows users to create typed objects — people, books, projects, ideas — and link them together in a personal knowledge graph. A note about a book can link to its author's person object, which links to related books and ideas, creating a connected knowledge base rather than isolated documents. Capacities is designed for researchers, writers, knowledge workers, and lifelong learners who want to build a personal database of interconnected knowledge rather than just a collection of notes. The daily notes feature and progressive summarization workflow make it suitable for capturing and processing information daily. Founded in 2021 in Germany, Capacities has grown through the personal knowledge management community alongside tools like Obsidian and Roam Research. The company competes with Notion, Obsidian, and Roam in the knowledge management tool market.
a2z Radiology AI raised $20M in 2025 for its whole-body AI that simultaneously screens for 24+ conditions across CT scans — from incidental cancers to cardiovascular risk — in a single automated read.
a2z Radiology AI has developed a whole-body CT analysis platform that simultaneously screens for over 24 medical conditions across a single CT scan, including incidental cancers, coronary artery disease, aortic aneurysm, bone density loss, and organ abnormalities. The AI acts as a second reader that radiologists can use to catch incidental findings that fall outside the primary reason for a scan — a major source of missed diagnoses.
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