NCCA Graphics Library (NGL)
NGL is used for most of the programming examples taught to students in the NCCA, it comprises of a number of C++ classes useful for graphics programming. It also has a separate python library binding which can be built so PyNGL can be used in python scripts.
It should be noted that most of these classes are not the most optimal solutions but are designed to teach principles of C++, Object Oriented programming and Graphics techniques. The library is based around OpenGL 3.x and Qt
Full details can be seen on the GitHub pages here