T 
Tana
checklist Productivity · $10/mo
AI-native outliner and knowledge graph.
gavel
Verdict: SURVIVED
The AI came for it and missed. The moat — workflow, data, taste, or trust — held.
Threatened by
OpenAI
Since
May 1, 2024
Price
$10/mo
Category
Productivity
bolt What replaced it
OpenAI — ChatGPT memory
history_edu The backstory
Structured knowledge graph is more than a chatbot.