Obsidian

About Obsidian

Obsidian is a powerful, extensible knowledge base and note-taking application that works with plain Markdown files stored locally on your device. It turns your notes into a connected web of knowledge using powerful bidirectional linking, an interactive graph view, thousands of plugins, and beautiful themes.

Unlike traditional note-taking apps that store your data in the cloud, Obsidian is local-first. This means you have full ownership of your notes, complete privacy, easy backups, and the ability to open your files with any text editor. It is perfect for building a "second brain" — a personal knowledge management system that grows with you over time.

Obsidian is extremely popular among students, researchers, writers, developers, and knowledge workers because of its flexibility. You can start with simple notes and gradually build complex systems: Zettelkasten, PARA method, daily journaling, project management, CRM, or even a full personal wiki.

The desktop app offers excellent performance, native feel, full offline support, and seamless synchronization options (via Dropbox, iCloud, Syncthing, or Obsidian Sync).

Key Features

• Works with plain Markdown files stored locally — full data ownership and easy backups
• Beautiful bidirectional linking and interactive Graph View to visualize connections between notes
• Thousands of community plugins and themes for endless customization and functionality
• Daily notes, templates, advanced search queries, and Dataview plugin support
• Canvas for visual note organization and mind mapping
• Publish notes to the web with Obsidian Publish (optional paid add-on)
• Available on Windows, macOS, Linux, iOS, and Android with seamless sync
• Powerful core plugins including Backlinks, Outline, Outliner, and more