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 License.
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.
For some reasons that some languages are not supported by Notepad++, User Language Define System can help you out in this case. This system allows user to define his own language : not only the syntax highlighting keywords definition, but also the syntax folding keywords definition, comment keywords definition and the operators definition.
You can define your language via User Language Define Dialog. However, the language you need may be already defined by someone-else in this User Defined Language List.
Learn more about Notpad++.