Devpad - Notepad-like VB.Net multi-tab source code editor for Windows XP, Vista and Windows 7 that supports...
Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.
ATPad - ATPad is a simple Notepad replacement written in pure C and Windows API. Keeping simplicity of Notepad it provides many additional features. 90kb UPX repacked
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.
Notepadqq - Notepadqq is a linux clone (identical application) of Notepad++
Vim - Highly configurable text editor built to enable efficient text editing