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Atom is a versatile piece of software that can help you edit your texts and documents, although it can do more, such as file viewing and handling. Atom is a desktop application based on web technologies. Like other desktop apps, it has its own icon in the dock, native menus and dialogs, and full access to the file system.

Everything you would expect:
Cross-platform editing
Atom works across operating systems. Use it on OS X, Windows, or Linux.

Built-in package manager
Search for and install new packages or create your own right from Atom.

Smart autocompletion
Atom helps you write code faster with a smart and 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.


Make it your editor:
Packages
Choose from thousands of open source packages that add new features and functionality to Atom, or build a package from scratch and publish it for everyone else to use.

Themes
Atom comes pre-installed with four UI and eight syntax themes in both dark and light colors. Can't find what you're looking for? Install themes created by the Atom community or create your own.

Customization
It's easy to customize and style Atom. Tweak the look and feel of your UI with CSS/Less, and add major features with HTML and JavaScript.

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.