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Notepad++ is a free (as in "free speech" and also as in "free beer") source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL Licence.

Based on a 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 friendlyness, 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.

This project is mature. However, there may be still some bugs and missing features that are being worked on. If you have any questions or suggestions about this project, please post them in the forums. Also, if you wish to make a feature request, you can post it there as well. But there's no guarantee that I'll implement your request.

I hope you enjoy Notepad++ as much as I enjoy coding it.


Here are the features of Notepad++ :	

Syntax Highlighting and Syntax Folding 


Supported languages : 	
C
C++
Java
C#
XML
HTML
PHP
CSS
makefile
ASCII art (.nfo)
doxygen	
ini file
batch file
Javascript
ASP
VB/VBS
SQL
Objective-C
RC resource file
Pascal
Perl
Python
Lua
TeX
TCL
Assembler
Ruby
Lisp
Scheme
Properties
Diff
Smalltalk
Postscript
VHDL
Ada
Caml
AutoIt
KiXtart
Matlab
Verilog
Haskell
InnoSetup
CMake
YAML


WYSIWYG 


If you have a colour printer, print your source code (or whatever you want) in colour. 


User Defined Syntax Highlighting 


It allows user to define his own language : not only the syntax highlighting keywords, but also the syntax folding keywords, comment keywords and the operators.


Auto-completion 


For most supported languages, user can make his/her own API list. Once the api file is ready, type Ctrl+Space to launch this action.


Multi-Document 


You can edit several documents at the same time. 


Multi-View 


You have two views at same time. That means you can visualize (edit) 2 different documents at the same time. You can visualize (edit) in the 2 views one document at 2 different positions as well. The modification of document in one view will carry out in another view (i.e. you modify the SAME document when you are in clone mode). 


Regular Expression Search/Replace supported 


You can search and replace one string in the document by using the regular expression. 


Full Drag ‘N' Drop supported 


You can open a document by drag & drop. You can also move your document from a position (or even a view) to another by drag & drop. 


Dynamic position of Views 


The user can set the position of the views dynamically (only in 2 views mode : the splitter can be set in horizontal or in vertical). 


File Status Auto-detection 


If you modify or delete a file which opened in Notepad++, you will be notified to update your document (reload the file or remove the file). 


Zoom in and zoom out 


That's another fantastic function of Scintilla component.


Multi-Language environment supported 


The Chinese, Japanese, Korean, Arabic and Hebrew Windows environments are supported.


Bookmark 


User can just click on the bookmark margin (located right side of line number margin) or type Ctrl+F2 to toggle a book mark. To reach the bookmark, type just F2 (Next bookmark) or Shift+F2 (Previous bookmark). To clear all bookmarks, click the Menu Search->Clear All bookmarks.


Brace and Indent guideline Highlighting 


When the caret stay beside of one of those symbol { } [ ] ( ) , the symbol beside of caret and its symmetric opposite symbol will be highlighted, as well as the indent guideline (if any) in order to locate the block more easily.


Macro recording and playback 


You can save several macros and edit their keyboard shorcuts for the next use.


Changelog:


Fix inaccurate replace bug.

Increase "Find what" and "replace with" fields to 2047 characters in Find/Replace dialog.

Stop the indicator highlighting while the line change marker margin is hidden.

SConstruct and SConscript are recognized as python file.