
Tana
AI-native note-taking with a knowledge graph that thinks alongside you.
Visit Tana Free tier, Pro $14/mo
What is Tana?
Tana is what Notion would be if it were built for AI first. Notes are structured as a knowledge graph; AI can reason across all your notes, summarise themes, surface connections. Beloved by knowledge workers, researchers, and second-brain enthusiasts.
Key features
- Knowledge graph data model (nodes + relationships)
- AI can reason across your entire note corpus
- Live templates and supertags
- Voice capture with AI summarisation
- Calendar + tasks integration
Pros
- Powerful for connected thinking
- AI integration feels native, not bolted on
- Active community
Cons
- Steep learning curve — not for casual note-takers
- Mobile experience trails desktop
- Smaller community than Notion or Obsidian
Best for
ResearchersConsultantsAnyone with a "second brain" practiceKnowledge workers in complex domains
Alternatives to Tana

Productivity
Notion AI
AI built into the productivity tool you already use.
Note assistant
FreemiumFree with limits, $10/mo per seat
Released February 2023
Productivity
Mem
AI-first note-taking app that connects everything automatically.
AI notes
FreemiumFree, Mem X $14.99/mo
Released November 2020
Productivity
Reflect
Note-taking with GPT-4 built in for connected thinking.
AI notes
PaidFrom $10/mo (annual)
Released November 2021