Notepad++ is a free, light weight but powerful editor which supports several programming languages, running under the MS Windows environment. With features such as syntax highlighting and folding, full drag & drop support, auto completion, regular expression search/replacement this tool is a must have. It can also be set as the default HTML editor, so when you click on View > Source under Internet Explorer, the HTML code will open with Notepad++. Another plus point is that it has a plugin architecture which allows further extendability. One of the bundled plugins is a Hex Editor.
This project, based on the Scintilla edit component (a very powerful editor component), written in C++ with pure Win32 API and STL (that ensures the higher execution speed and smaller size of the program), is under the GPL Licence.
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