Notepad++ Portable has all the same great features of Notepad++ including support for multiple languages and an extensive plugin system, but there's nothing to install.
Here are some key features of "Notepad plusplus Portable":

- Syntax Highlighting and Syntax Folding (C, C++, HTML, ASP, Java, Pascal, CSS and more)
- User Defined Syntax Highlighting
- Auto-completion
- Multi-Document
- Regular Expression Search/Replace supported
- Full Drag -N' Drop supported
- Zoom in and zoom out
- Multi-Language environment supported
- Brace and Indent guideline Highlighting
- Macro recording and playback

Extract on hard disk or USB key and run Notepad++Portable.
If you use as default editor (F4 in Total Commander) edit Notepad++Portable.ini with AllowMultipleInstances=true.
Language fixed by launcher according Windows localisation : Arabic, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Farsi, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Lithuanian, Norwegian, Polish, Portuguese, PortugueseBR, Romanian, Russian, SimpChinese, Slovak, Slovenian, Spanish, Swedish, TradChinese, Turkish, Ukrainian.
Settings saved in Data folder.
Settings of installed Notepad++ should be preserved.

OS : Win XP/2000/Vista/Win 7
Language : Multilanguage

Home Page - http://notepad-plus.sourceforge.net/