What are some alternatives?
When comparing Microsoft Visual Studio and Atom, you can also consider the following products
Xcode - Xcode 4 is the new version of Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Eclipse - Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.
Vim - Highly configurable text editor built to enable efficient text editing