Private, local-first Markdown knowledge base with bidirectional linking and graph view.
Technical Overview & Architecture
Obsidian is a private, local-first note-taking and personal knowledge management (PKM) system built entirely on plain text Markdown files stored directly on your device. It utilizes bidirectional wikilinks (`[[Note]]`) to construct an interactive knowledge graph, supported by a massive community plugin ecosystem and end-to-end encrypted device sync.
Pricing Breakdown
Transparent tiers and feature allotments for engineering teams.
Personal
$0
- 100% Free forever
- Full access to plugins & API
- Community support
- No account required
Most Popular
Commercial
$50/user/year
- Required for commercial work in organizations with 2+ employees
- Priority email support
Sync Add-on
$4/mo
- End-to-end encrypted cloud sync
- Version history up to 1 year
- Cross-platform sync
Publish Add-on
$8/site/mo
- 1-click publish notes to custom domain
- Interactive graph view web support
Compare Obsidian Against Alternatives
See how Obsidian stacks up against competitor tools across speed, APIs, and pricing.