Capacities
Free tierA studio for your mind — turn ideas into connected objects, not files buried in folders
Free tier available·All audiences·API available
Key strengths
Object-based knowledge graph (link anything to anything)Automatic related content surfacing without manual linkingDaily notes as a frictionless inboxNo folder hierarchy or complex configuration neededGDPR-compliant EU hosting with full data export
Free tier + paid plans · from $9.99 USD/mo
Germany
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Recent changes
- Plans updated: Free Basic plan forever; Pro at $9.99/month (includes AI assistant, task management, smart queries, calendar integration, public API, and more); Believer from $12.49/month (beta access to major new features + everything in Pro); optional Plus AI Power-Up add-on at $8.33/month billed annually.
- API: now available
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Use Cases — Developers & Technical Knowledge Workers
Capacities is well-suited to technical users who need a personal knowledge base that can grow with their work and connect to existing tooling.
Developer & Founder Workflows
- API-driven capture: Use the public API (Pro+) to pipe data from custom scripts, webhooks, or internal tools directly into your Capacities knowledge graph — e.g., auto-logging meeting notes, code snippets, or research findings.
- Readwise + Kindle sync: Automatically pull in highlights from technical books and articles to build a searchable reference library linked to your own notes and projects.
- Telegram / WhatsApp capture: Send quick thoughts or links from your phone to Capacities without breaking flow, then connect them to relevant objects later.
- Smart queries: Use smart queries (Pro) to surface objects by type, tag, or relationship — useful for tracking open questions, decisions, or project dependencies across a codebase or product.
- Task management: Manage personal tasks alongside the knowledge objects they relate to, keeping context attached to action items.
Why Technical Users Choose Capacities
- Public API removes the ceiling on automation and integration.
- GDPR-compliant EU hosting is a hard requirement for many European developers and teams.
- Full data export means no lock-in — your graph can be migrated or backed up.
- User-funded model signals long-term product stability without VC-driven pivots.
Alternatives
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