Obsidian vs Microsoft OneNote (2026 comparison)
Obsidian and Microsoft OneNote are both note-taking apps. Obsidian is best for local-first markdown notes and linked knowledge graphs (free without limits, including commercial use; optional Sync from about $4 per user per month and Publish from about $8 per site per month). Microsoft OneNote is best for freeform notebooks tied to the Microsoft ecosystem (free; deeper features via Microsoft 365).
Pricing and features verified against each vendor's published information on 2026-09-03. Sources linked below.
At a glance
| Feature | Obsidian | Microsoft OneNote |
|---|---|---|
| Free plan | Yes | Yes |
| Pricing from | Free without limits, including commercial use; optional Sync from about $4 per user per month and Publish from about $8 per site per month | Free; deeper features via Microsoft 365 |
| Best for | local-first markdown notes and linked knowledge graphs | freeform notebooks tied to the Microsoft ecosystem |
| Founded | 2020 | 2003 |
| Platforms | iOS, Android, Mac, Windows, Linux | Web, iOS, Android, Mac, Windows |
Quick verdict
Choose Obsidian for local-first markdown notes and linked knowledge graphs. Choose Microsoft OneNote for freeform notebooks tied to the Microsoft ecosystem. Both are compared on published information only, so confirm current pricing at each source below.
More options
Sources
FAQ
- Is Obsidian or Microsoft OneNote cheaper?
- As published, Obsidian starts at Free without limits, including commercial use; optional Sync from about $4 per user per month and Publish from about $8 per site per month and Microsoft OneNote starts at Free; deeper features via Microsoft 365. Verify current pricing at each vendor.
- Does Obsidian have a free plan?
- Yes, Obsidian has a free plan as of 2026-09-03.