Spark ideas. From personal notes to journaling, knowledge bases, and project management, Obsidian gives you the tools to come up with ideas and organize them.

Obsidian is available on all major platforms. Download Obsidian for iOS, Android, macOS, Windows and Linux.

Obsidian Help Welcome to the official Obsidian Help site, where you can find tips and guides on how to use Obsidian. For API documentation visit the Obsidian Developer Docs.

Open Obsidian the same way you would open any other app. You can optionally download the APK for Android from the [Download Obsidian](https://obsidian.md/download) page.

An eclectic Obsidian user and seeker of knowledge, she wears many hats in her role as support staff.

Obsidian is still free for personal use. You can purchase add-on services like Sync or Publish, get a commercial license for work, or support us with a Catalyst license.

Obsidian is a private and secure space for your thoughts. You can use our apps without sharing any personal information, and your data is stored locally on your device, making it inaccessible …

Instead of providing you with an opinionated and assembled product, Obsidian gives you a foundation and numerous functional building blocks to discover and build your own solution. …

Obsidian Sync is the simple and secure way to synchronize your Obsidian notes across any device and OS.

Feb 20, 2025 · People in over 10,000 organizations use Obsidian for work. Starting today, the Obsidian Commercial license is optional. Anyone can use Obsidian for work, for free. If …