O 
Obsidian
checklist Productivity · free tier
Local-first markdown knowledge base.
gavel
Verdict: SURVIVED
The AI came for it and missed. The moat — workflow, data, taste, or trust — held.
Threatened by
Anthropic
Since
Aug 20, 2024
Price
free
Category
Productivity
bolt What replaced it
Anthropic — Claude memory + AI notes
history_edu The backstory
You own the files; AI is optional via plugins.