Side-by-side comparison based on expert reviews and community consensus.
Microsoft OneNote
Best OverallObsidian
Best for Power UsersPrice
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Summary
The most flexible free note-taking app available, works across every platform and suits nearly any workflow. PCMag calls it the first app most people should consider — and it's completely free.
A local-first, Markdown-based app beloved by knowledge workers who want full control over their notes. Reddit's note-taking community consistently recommends it for anyone who thinks in systems.
Pros
- Completely free with no premium tier required
- Highly flexible — supports text, images, audio, and freehand drawing
- Deep integration with Microsoft 365 and Copilot AI
- Works across all major platforms
- Notes stored locally as plain Markdown files — you own your data forever
- Powerful bi-directional linking and graph view for connecting ideas
- Massive plugin ecosystem for customization
- Free for personal use
Cons
- Interface can feel cluttered compared to minimalist alternatives
- AI features require Microsoft 365 subscription
- Less suited for Markdown-heavy or developer workflows
- Steep learning curve for non-technical users
- Sync across devices requires paid Obsidian Sync or third-party solution
- No built-in collaboration features
Our take
OneNote wins because it's free, powerful, and works for everyone from students to executives. If you're not sure what you need, start here.
If you're the type who builds a second brain and links ideas together, Obsidian is in a class of its own. The community around it is massive and the plugin ecosystem is unmatched.
Buy
