Obsidian

Obsidian is a knowledge base that works on top of a local folder of Markdown files. 2025 features Bases (Database views) and native Canvas.

When to Use

• Personal Knowledge Management (PKM): Zettelkasten method.
• Privacy: Your data is just files on your disk. No cloud lock-in.
• Research: Linking complex ideas together.

Core Concepts

Links

[[Internal Link]] connects ideas. The "Graph View" visualizes these connections.

Plugins

Community plugins transform it into a task manager (Dataview, Tasks).