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Capacities is an object-based personal knowledge management tool that treats your notes like a network of thoughts. It seamlessly integrates AI assistants to help summarize texts, brainstorm ideas, and connect your research in an intuitive workspace.
Ask AI about Capacities
Opens your assistant with the question already written — strengths, weaknesses and alternatives.
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How tools are selected
Every tool on aistacks is manually reviewed before being added. We look at real-world usage, workflow fit, and whether it genuinely saves time — not just popularity.
What belongs in a good stack
Tools are grouped by workflow role — not thrown together. Each stack is built around a specific persona and task, so every tool has a clear reason for being there.
Have thoughts on this tool?
Be the first to share how you use it, what workflow it fits into, or a tip that others might miss. Real usage notes help everyone.
Free core features, Pro at $10/mo with advanced AI capabilities
Completely free
Local-first knowledge base and note-taking app with AI plugins.
Free for personal use, Sync $4/mo
Turn your text into visuals and diagrams automatically with AI.
Free beta, Pro coming soon