It runs on Electron, a framework for building cross platform apps using web technologies. The tool is a Mac desktop application built with HTML, JavaScript, CSS, and Node.js integration. Check out the video on setting up the tool. You can tweak the look and feel of your UI with CSS/Less and add major features with HTML and JavaScript. It's easy to customize and style Atom for macOS. If you can't find what you're looking for, you can also install themes created by the app community or create your own. The app comes pre-installed with four UI and eight syntax themes in both dark and light colors.
You 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.
Atom for Mac is a 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.
