Overview
Obsidian is a note-taking app that stores notes as local Markdown files and lets you link them together into a graph, popular for building personal knowledge bases ("second brains"). It's free for personal use and extended through a large community plugin ecosystem.
Available On
WebWindowsMacosLinuxIosAndroidMobile AppDesktop AppAPI
Key Features
Bi-directional linking & graph view
Local Markdown file storage
Massive community plugin library
Canvas for visual thinking
Optional end-to-end encrypted sync
Pros
- Full data ownership — notes are plain local files
- Extremely extensible via plugins
- Free for personal use
Cons
- Plugin-dependent workflows can break on updates
- Steeper learning curve than simple note apps
- Native collaboration is limited without paid Sync
Pricing Plans
PersonalFREE
Free
- Unlimited local notes
- Core plugins
- Mobile & desktop apps
SyncPAID
$4/mo
- End-to-end encrypted sync
- Version history
CommercialPAID
$50/mo
- Per-user commercial license
- Priority support
User Reviews
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Integrations
Community plugins (1000+)Git
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Quick Info
Websiteobsidian.md
CategoryProductivity & Collaboration
Team SizeINDIVIDUAL
ReleasedJanuary 1, 2020
Last UpdatedJune 1, 2026
Monthly Visits15.0M
API AvailableYes
Open SourceNo
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