It comes with an in-built file system browser, allowing to easily browse and open a file or multiple projects in one window. With the split function, you can divide the interface into multiple screens, enabling you to compare and edit codes across files. The application comes with IDE features such as package manager and smart auto-completion, you can search and install new packages and write codes faster.
All in all, the application not only provides you with the features of a text editor but also an IDE.
Atom for Mac is licensed as freeware for Mac OS operating system. It is in code editor / ide category and is available to all software users as a free download.