Obsidian

Obsidian is a note-taking app that works with plain text files stored directly on your device. You can write notes, link them together, and see how your ideas connect through a visual graph. Unlike cloud-based tools, everything stays private on your computer.

The app uses simple text files with basic formatting, which means your notes remain readable even without Obsidian. You can link any note to another, creating connections that help you discover patterns in your thinking. This makes it great for building knowledge over time.

There is a free version with all core features and optional paid services for cloud syncing and web publishing. The app works on computers, phones, and tablets.

• Stores notes locally on your device with full privacy

• Links notes together to build knowledge networks

• Visual graph shows connections between ideas

• Canvas for unlimited brainstorming space

• Thousands of free community plugins available

• Works offline without internet connection

• Plain text files you own forever

• Mobile apps for phones and tablets

• Supports basic text formatting

• Free to use with optional paid services