A professional source code editor for Windows available as Freeware.  While Crimson Editor can serve as a good replacement for Notepad, it is most useful for programming languages such as HTML, C/C++, Perl and Java. Features include syntax highlighting preconfigured for more than 100 programming languages, mult-level undo/redo, project management, find & replace, spell checker, macros, column mode editing, built-in ftp client, and option to save files in Unix format.