Notepad++ is a free source code editor (and Notepad replacement), which supports several programming languages, running under the MS Windows environment. It also gives the extra functionality to define a user's own language for the syntax folding and syntax highlighting. You can print your source code in color. It allows a user to edit the different document in the same time, and even to edit the same document synchronizely in 2 different views. It supports full drag and drop.

The programming languages supported by Notepad++ are:

ASP, Ada, ASCII art, Assembly, AutoIt, BAT, C, C#, C++, Caml, CSS, doxygen, FORTRAN, HTML, Haskell, Java, JavaScript, KiXtart, Lisp, Lua, makefile, Matlab, Objective-C, Pascal, Perl, PHP, PostScript, Python, Ruby, Scheme, Unix Shell Script, Smalltalk, SQL, Tcl, TeX, Verilog, VHDL, VB/VBScript, XML

This project, based on the Scintilla edit component (a very powerful editor component), written in C++ with pure win32 api and STL (that ensures the higher execution speed and smaller size of the program), is under the GPL Licence.

Here are the features of Notepad++ :

• Syntax Highlighting and Syntax Folding
• WYSIWYG
• User Defined Syntax Highlighting
• Auto-completion
• Multi-Document
• Multi-View
• Regular Expression Search/Replace supported
• Full Drag ‘N' Drop supported
• Dynamic position of Views
• File Status Auto-detection
• Zoom in and zoom out
• Multi-Language environment supported
• Bookmark
• Brace and Indent guideline Highlighting
• Macro recording and playback

Notepad++ v5.1.4 new feature and fixed bugs (from v5.1.3) :

1. Add localization on run time feature : Change language on the run time for Unicode version (via preferences dialog).
2. Add the ability to force opened ANSI document as UTF-8 w/o BOM.
3. Fix verbose backup bug (while the backup dir is not set).
4. Fix bug that external lexer doesn't work with Unicode version.
5. Fix recent files list bug.
6. Include a help content file.
7. Add new plugin notification message NPPN_WORDSTYLESUPDATED.
8. Add 2 plugin messages for shortcut feature : NPPN_SHORTCUTREMAPPED notification and NPPM_GETSHORTCUTBYCMDID message.