txtPro Text Editor - txtPro Text Editor is the name of an all in one script, plain text and language code editor with the additional function of syntax highlighting as well.
Syn Text Editor - Syn Text Editor is a highly flexible and customizable text editor and programming editor for the Windows operating system user.
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.
Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.