Obsidian is a note-taking app that stores files locally on your device instead of in the cloud. With Obsidian, you use markdown language to create your notes. Unlike Notion, which has a database structure, Obsidian has a knowledge graph structure where all your notes are interconnected through bi-directional linking.

A second brain, for you, forever.

Obsidian is a powerful and extensible knowledge base that works on top of your local folder of plain text files.

Everything is connected

The human brain is non-linear: we jump from idea to idea, all the time. Your second brain should work the same.

In Obsidian, making and following connections is frictionless. Tend to your notes like a gardener; at the end of the day, sit back and marvel at your own knowledge graph.

Graph View

The graph is your knowledge at a glance. Explore, observe, and stay motivated. With group, filter, and display options, see things your way.

Local graph shows connections around you. Get inspired while writing

Backlinks

Converge your thoughts.

Broaden your view to see this note in other contexts. Link relevant pages with one click.

Outgoing Links

Diverge your thoughts.

See all existing and potential links from this note. Turn mentions into links with one click.

Extensively extensible

Note-taking is incredibly personal. Tried every app, but something always irks you? You deserve better.

For those who can’t custom-build a solution for themselves, Obsidian is as close as you can get, with plugins, themes, and custom CSS at your disposal.

Your Knowledge Building Blocks

Obsidian is built to be extensible from the ground up. We want you to build your own system, play with it, tweak it, until you’re happy.

Obsidian is a versatile toolbox: with 25 core plugins, 979 community plugins, and 191 themes, plus custom styling, you can tweak Obsidian to work and look exactly how you want it.

Mix and Match

Some community plugins do a single thing extremely well, like Calendar and Kanban. Others unlock endless possibilities: Dataview and Templater are great examples.

They are super easy to grab: the built-in plugin marketplace lets you install them with one click. And the sum of the parts is greater than the whole: some plugins work even better together.

Do it Yourself

Looking for something unique? There’s no need to wait for someone else to make it! Whether you have programming experience or not, you can try your hands at making your Obsidian plugin.

All community plugins are available on GitHub if you like to study them. Our developer community is also here to help!

Find out more here.