What are some alternatives?
When comparing Atom and Visual Studio Code, you can also consider the following products
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.
Vim - Highly configurable text editor built to enable efficient text editing
Brackets - A modern, open source text editor that understands web design
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Notepad - Most simple text editor. Just plain text, saves in .txt format.