PyGTK is described as 'Lets you to easily create programs with a graphical user interface using the Python programming language. The underlying GTK+ library provides all kind of visual elements and utilities for it and, if needed, you can develop full featured applications for the GNOME Desktop' and is an app in the development category. There are more than 10 alternatives to PyGTK for a variety of platforms, including Windows, Linux, Mac, Android and BSD apps. The best PyGTK alternative is Qt, which is both free and Open Source. Other great apps like PyGTK are GTK, Kivy, wxWidgets and CustomTkinter.