Notepad++ is a source code editor for Windows. It is distributed as free software. The project is hosted on SourceForge.net, from where it has been downloaded over thirteen million times.

This project, based on the Scintilla editor component, is written in C++ with pure Win32 API calls using only the STL in order to increase performance and reduce program size. The aim of Notepad++ is to reduce overall power consumption by using efficient binaries that require less CPU power, ideally resulting in a greener environment.

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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