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Atom is a free text editor that's modern, approachable, yet hackable to the core—a tool you can customize to do anything but also use productively without ever touching a config file.

Cross-platform editing

Atom works across operating systems. You can use it on OS X, Windows, or Linux.

Built-in package manager

Search for and install new packages or start creating your own—all from within Atom.

Themes

Atom comes pre-installed with four UI and eight syntax themes in both dark and light colors. If you can't find what you're looking for, you can also install themes created by the Atom community or create your own.

Customizable

It's easy to customize and style Atom. You can tweak the look and feel of your UI with CSS/Less and add major features with HTML and JavaScript. Check out the video on setting up Atom.

Smart autocompletion

Atom helps you write code faster with a smart, flexible autocomplete.

File system browser

Easily browse and open a single file, a whole project, or multiple projects in one window.

Multiple panes

Split your Atom interface into multiple panes to compare and edit code across files.

Find and replace

Find, preview, and replace text as you type in a file or across all your projects.

Under the hood

Atom is a desktop application built with HTML, JavaScript, CSS, and Node.js integration. It runs on Electron, a framework for building cross platform apps using web technologies.

Open source

Atom is open source. If you'd like to be part of the Atom community or help improve your favorite text editor, find us on GitHub, Discuss and Slack.