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. Syntax Highlighting and Syntax Folding (C, C++, HTML, ASP, Java, Pascal, CSS and more). User Defined Syntax Highlighting. Regular Expression Search/Replace supported. Multi-Language environment supported.
Features:
Auto-completion
Multi-Document
Full Drag ?N' Drop supported
Zoom in and zoom out
Brace and Indent guideline Highlighting
Macro recording and playback
Size (7z): 3 Mb