Obsidian

What it is

Obsidian is a Markdown-based, local-first note-taking app designed for building a personal knowledge base through interconnected notes.

Core ideas

• Plain text & local-first: Notes are stored as .md files on your device.
• Linked thinking: Use [[wikilinks]] to connect ideas.
• Knowledge graph: Visualize relationships between notes.
• Extensible: Powerful plugin ecosystem and custom themes.

Key features

• Bidirectional links and backlinks
• Graph view (global & local)
• Tags and folders
• Full-text search
• Daily notes
• Plugins (community & core)

Typical use cases

• Personal knowledge management (PKM)

• Research notes and literature reviews

• Journaling and daily notes

• Project and task planning

• Zettelkasten-style note systems

Example

This note links to [[Large Language Models]] and [[Note-Taking Systems]].