✓
Tool
Category
Pricing
Free?
Updated
Obsidian ✓
AI Productivity
Freemium
✓
Mar 2026
→
Local-first knowledge base with AI plugins for second brain building
Best for: note-taking
Logseq
AI Productivity
Free
✓
Mar 2026
→
Open-source local-first knowledge management with AI and bidirectional links
Best for: note-taking