Atom is a hackable text editor for the 21st century, built on Electron, and based on everything we love about our favorite editors. We designed it to be deeply customizable, but still approachable using the default configuration. Visit atom.io to learn more or visit the Atom forum. Follow @AtomEditor on Twitter for important announcements. An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. Sep 11, 2019 Atoms are the basic units of matter and the defining structure of elements. The term 'atom' comes from the Greek word for indivisible, because it was once thought that atoms were the smallest.
Teletype for Atom
Great things happen when developers work together—from teaching and sharing knowledge to building better software. Teletype for Atom makes collaborating on code just as easy as it is to code alone, right from your editor.
Share your workspace and edit code together in real time. To start collaborating, open Teletype in Atom and install the package.
GitHub for Atom
A text editor is at the core of a developer’s toolbox, but it doesn't usually work alone. Work with Git and GitHub directly from Atom with the GitHub package.
Create new branches, stage and commit, push and pull, resolve merge conflicts, view pull requests and more—all from within your editor. The GitHub package is already bundled with Atom, so you're ready to go!
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.
Atoms To Moles
Make it your editor
Packages
Atom Software Download
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.
See how to set up Atom
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.
Atomic Habits
Open source
Atomic Time
Atom is open source. Be part of the Atom community or help improve your favorite text editor.
Atom Definition
Keep in touch
Atomic Mass
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