SiYuan vs Capacities: Which Should You Choose in 2026?
Choosing between SiYuan and Capacities comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated March 22, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
SiYuan
Privacy-first personal knowledge management system with Markdown, block references, and bi-directional links.
Best for you if:
- 0
- • You need something completely free
- • Privacy-first personal knowledge management.
- • Supports Markdown, block references, and bi-directional links.
Capacities
Object-based note-taking
Best for you if:
- 0
- • Capacities is a note-taking app that organizes information as objects with types
- • It structures notes as books, people, projects, and custom object types
| At a Glance |  SiYuan |  Capacities |
|---|---|---|
Price | Free | Free + Paid |
Best For | Note-Taking | Note-Taking |
Rating | — | — |
| Feature | SiYuan | Capacities |
|---|---|---|
| Pricing Model | Free | Freemium |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Note-Taking | Note-TakingMind Mapping |
How SiYuan and Capacities Compare
SiYuan
Privacy-first personal knowledge management system with Markdown, block references, and bi-directional links.
Free
Capacities
Object-based note-taking
Free tier available
Who Should Use What?
On a budget?
SiYuan is free. Capacities is freemium.
Go with: SiYuan
Want the highest-rated option?
Neither has user reviews yet.
Go with: SiYuan
Value user reviews?
Neither has user reviews yet.
Go with: SiYuan
3 Questions to Help You Decide
What's your budget?
SiYuan is free. Capacities is freemium. Go with SiYuan if free matters most.
What's your use case?
Both are note-taking tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
SiYuan
- 0
- Completely free
- Our pick for this comparison
Capacities
The Bottom Line
SiYuan is our pick.
Frequently Asked Questions
Is SiYuan or Capacities better?
SiYuan is rated high in our evaluation. SiYuan is free and Capacities is freemium.
What are SiYuan and Capacities used for?
SiYuan: Privacy-first personal knowledge management system with Markdown, block references, and bi-directional links.. Capacities: Object-based note-taking.
What does SiYuan cost vs Capacities?
SiYuan is completely free. Capacities is freemium (free tier + paid plans). Visit their websites for detailed pricing.