Obsidian

What is Obsidian?

Obsidian is a powerful knowledge base and note-taking app that works on top of a local folder of Markdown files. It supports bidirectional links, a visual knowledge graph, and an ecosystem of 1000+ community plugins.

Key Features

• Local Markdown files — you own your data
• Bidirectional links and knowledge graph view
• 1,000+ community plugins
• Canvas for visual thinking
• Obsidian Sync (optional, E2E encrypted)
• Publish to the web with Obsidian Publish

Pricing

Free for personal use. Sync at $5/month. Publish at $10/month. Commercial license at $50/year.