Notepad++

A light-weight text and source code editor perfect for viewing and editing documents and programming languages.

Notepad++ is a free (under the GPL license) source code editor which supports several programming languages under Windows environment. Supported formats include C, C++, Java, C#, XML, HTML, PHP, Javascript, RC file, makefile, nfo, doxygen, ini file, batch file, ASP, VB/VBS, SQL, Objective-C, CSS, Pascal, Perl, Python, Lua, Unix Shell Script, Fortran, NSIS and Flash action script. Additional features are Syntax Highlighting and Syntax Folding, User Language Define System, Regular Expression Search, WYSIWYG, Unicode support, Full drag-and-drop, Brace and Indent guideline Highlighting, 2 edits and synchronized view of the same document, plus a User Language Define System.