Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.
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.
Atom - At GitHub, we’re building the text editor we’ve always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can’t wait to see what you build with it.
GNOME - An easy and elegant way to use your computer, GNOME is designed to put you in control and get things done.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
Notepad - Most simple text editor. Just plain text, saves in .txt format.