Obsidian
Tettra
| Feature | Obsidian | Tettra |
|---|---|---|
| Pricing | Free / from $4/mo | Free / from $8.33/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.7 / 5 | 4.3 / 5 |
| Best For | researchers, writers, developers, knowledge-workers | growing-teams, ops-teams, people-teams, customer-success |
| Founded | 2020 | 2016 |
| Markdown | ✓ | ✗ |
| Backlinks | ✓ | ✗ |
| Graph View | ✓ | ✗ |
| Plugins | ✓ | ✗ |
| Themes | ✓ | ✗ |
| Canvas | ✓ | ✗ |
| Ai Answers | ✗ | ✓ |
| Slack Bot | ✗ | ✓ |
| Verification Cycle | ✗ | ✓ |
| Page Suggestions | ✗ | ✓ |
| Categories | ✗ | ✓ |
| Analytics | ✗ | ✓ |
✓ Obsidian Pros
- 100% offline
- Local-first
- Plugin ecosystem
- Graph view
- Free for personal use
✗ Obsidian Cons
- No real-time collaboration
- Steep learning curve
- Mobile app is basic
✓ Tettra Pros
- AI answers questions from your knowledge base
- Slack bot for instant answers
- Content staleness alerts
- Simple editor non-technical teams love
✗ Tettra Cons
- Limited formatting options
- No public-facing documentation
- Smaller feature set than Notion
The Verdict
Obsidian is built for researchers and writers, with a focus on markdown and backlinks. Tettra targets growing teams and ops teams and leads with ai-answers and slack-bot.
Pricing is close: Obsidian starts at $4/mo versus $8.33/mo for Tettra — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Obsidian edges out on user ratings (4.7 vs 4.3). While both are well-regarded, that gap reflects real differences in user satisfaction worth considering.
Bottom line: Obsidian has a slight overall edge — but if ai answers questions from your knowledge base matters most to you, Tettra may still be the right call.
