Notion
Strengths
- All-in-one workspace
- Real-time collaboration
- Databases & relations
- Beautiful templates
- AI assistant built-in
Weaknesses
- Slow with large databases
- Internet required (mostly)
- Vendor lock-in
- $8-15/user/mo for teams
- Can be over-engineered
PriceFree / $8 / $15 per user/mo
StorageUnlimited blocks
CollaborationReal-time
PlatformsWeb, Mac, Windows, iOS, Android
Best ForTeams, project management
Obsidian
Strengths
- Local files (you own your data)
- Blazing fast
- Bidirectional linking & graph
- 700+ community plugins
- Works offline
Weaknesses
- No real-time collaboration
- Markdown learning curve
- Sync costs $4/mo
- No databases
- Setup required
PriceFree (personal) / $4/mo sync / $50/yr commercial
StorageLocal (unlimited)
CollaborationNone (or Obsidian Publish)
PlatformsMac, Windows, Linux, iOS, Android
Best ForPersonal knowledge management
