Tana is an AI note-taking and personal knowledge management tool built around a structured, node-based data model — every note, item, and idea is an object that can have properties, relationships, and types. This structure turns your notes into a personal database that the AI can reason about, enabling queries like 'show me all meetings with this person where we discussed this project.'

The Supertag system is Tana's distinctive design: you create typed nodes (a 'Person' type, a 'Book' type, a 'Meeting' type) with defined properties, and Tana uses these types to provide intelligent organization, filtering, and AI commands that understand what each node represents. This semantic structure goes significantly further than plain text notes in enabling systematic knowledge retrieval.

Tana has developed a devoted following among people who think systematically about knowledge management and personal productivity — particularly those who've explored multiple PKM tools and want something with more structural depth than Notion or Obsidian. The learning curve is steep, and the value scales with how consistently you use and structure information.

🐱 SAGE SAYS

Tana rewards the people willing to think about their own information needs before using it. Spend a week mapping out the types of information you capture and what questions you want to answer before setting up your Supertags. That planning investment makes everything work better.

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