Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.
AkelPad - A simple notepad-like text editor with many features. It is designed to be a small and fast.
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.
Notepad2 - Notepad2 is a fast and light-weight Notepad-like text editor with syntax highlighting.
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.