Notepad++ это бесплатный редактор текстовых файлов (замена стандартного Блокнота) с поддержкой синтаксиса большого количества языков программирования, ориентирован для работы в операционной системе MS Windows.
Этот проект базируется на компоненте Scintilla (очень мощном компоненте для редактирования) написанном на C++ с использованием только Win32 API и STL (что гарантирует максимальную скорость выполнения при минимальном размере программы), распространяется под лицензией GPL.

Основные особенности Notepad++ :
• Подсветка текста и возможность сворачивания блоков, согласно синтаксису языка программирования
• WYSIWYG (печатаешь и получаешь то, что видишь на экране)
• Настраиваемый пользователем режим подсветки синтаксиса
• Авто-завершение набираемого слова
• Одновременная работа с множеством документов
• Одновременный просмотр нескольких документов
• Поддержка регулярных выражений Поиска/Замены
• Полная поддержка перетягивания фрагментов текста
• Динамическое изменение окон просмотра
• Автоматическое определение состояния файла
• Увеличение и уменьшение
• Поддержка большого количества языков
• Заметки
• Выделение скобок при редактировании текста
• Запись макроса и его выполнение

Notepad plus plus description
A source code editor for the programmer and a better text editor
Notepad++ is a free source code editor which supports several programming languages running under the M$ Windows environment.Notepad++ is designed to be a freeware replacement for Notepad. 

This project, based on Scintilla edit component (a very powerful editor component) and written in C++ with pure win32 api (i.e. without MFC, that ensures the higher execution speed and smaller size of the program), is under the GPL Licence. 

This project is mature. However, as you can see it’s a one-man-project, there’re still some bugs and missing features. 

If you have any question or suggestion about this project, please drop me a mail, I’ll love to hear from you. As well, if you have any feature request, you can always do the demand, but there’s no warranty that I’ll implement it. 

Here are some key features of "Notepad plus plus":

· Syntax Highlighting and Syntax Folding 
Supported languages : C, C++, Java, C#, XML, HTML, PHP, Javascript, RC resource file, makefile, ASCII art file (extension .nfo, doxygen, ini file, batch file, ASP, VB/VBS source files, SQL, Objective-C, CSS, Pascal, Perl, Python and Lua. 

· WYSIWYG

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

· Style Configurator 
For each style in every supported language, user can change the background/foreground colour, the font, font size and font style ( bold or Italic ) via the Style Configurator Dialog. 

· User Define 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.

· 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 supported
You can search 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 and Korean 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 bloc more easily.