Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size. By optimizing as many routines as possible without losing user friendliness, Notepad++ is trying to reduce the world carbon dioxide emissions. When using less CPU power, the PC can throttle down and reduce power consumption, resulting in a greener environment.

Features
Syntax Highlighting and Syntax Folding
User Defined Syntax Highlighting and Folding: screenshot 1, screenshot 2, screenshot 3 and screenshot 4
PCRE (Perl Compatible Regular Expression) Search/Replace
GUI entirely customizable: minimalist, tab with close button, multi-line tab, vertical tab and vertical document list
Document Map
Auto-completion: Word completion, Function completion and Function parameters hint
Multi-Document (Tab interface)
Multi-View
WYSIWYG (Printing)
Zoom in and zoom out
Multi-Language environment supported
Bookmark
Macro recording and playback
Launch with different arguments

Notepad++ v6.7.2 enhancements and bug fixes:
1. Fix the crash issue while config.xml and stylers.xml are not loaded.
2. Fix NPPM_LAUNCHFINDINFILESDLG API regression issue.
3. Prevent auto-insert of {} [] () "" and '' from inserting in column mode.
4. Fix the bug that "Function parameters hint on input" checkbox in preferences dialog is not initialized correctly.
5. Fix saving theme modified styles not working problem (Copy theme files in %APPDATA% to avoid UAC problem).
6. Improve the usability of User Defined Language dialog: reduce dialog's height.