Tana
AI-powered knowledge management tool built on supertags - a flexible schema system that turns notes into structured, queryable databases.
Tana is a PKM and knowledge management tool founded in Norway in 2021 that introduces supertags - reusable type definitions that give any note structured fields, turning freeform text into queryable data. A note tagged as a "Book" automatically gains author, status, and rating fields; one tagged as a "Meeting" gets date, attendees, and action items. Tana AI sits on top of this structured layer and assists with writing, searching, and extracting information from the knowledge graph. Unlike Notion or Obsidian, Tana is designed for knowledge workers who want the flexibility of plain text with the power of a structured database without building complex templates. Tana reached 100,000+ users in 2024 and is especially popular among researchers, writers, and consultants.
Key Features
- Supertag system - define reusable type schemas that give notes structured fields automatically
- Inline queries - filter and display notes by tag, field value, or relationship anywhere in the graph
- AI search and extraction - query your knowledge base in natural language to surface relevant notes
- Bidirectional links with graph view for visualizing relationships across the knowledge base
- Collaboration workspace with shared supertag schemas and real-time editing for teams
- Command palette and keyboard-first design for fast capture and navigation without mouse usage
Use Cases
- Researchers building structured literature review databases with custom book and paper supertags
- Consultants managing client notes with consistent meeting and project templates as supertags
- Writers organizing plot, character, and research notes with queryable relational structure
- Product managers tracking features, feedback, and decisions with linked, structured note types
Pros
- Supertag schema system provides relational database power without leaving a plain-text note interface
- 100,000+ active users validate that the unconventional model delivers real productivity gains
- Free plan provides full access to core features - paid plan adds AI and advanced team collaboration
Cons
- Steep learning curve - supertags and inline queries require significant onboarding time versus simpler note tools
- Mobile app lags behind the desktop experience in speed and feature parity
- Data export is limited - migrating away from Tana involves losing the structured supertag relationships
Tana Alternatives
Explore similar tools and alternatives
Looking for alternatives to Tana? Here are some similar tools you might like:
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Reflect
AI-powered note-taking app with networked backlinks and an AI assistant trained on your personal notes - built for knowledge workers who think in connections.
Heptabase
Visual note-taking and knowledge management app with infinite whiteboards, AI chat, and a card-based system for deep research.
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