A cross-platform GUI library
wxWidgets is a C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. It has popular language bindings for Python, Perl, Ruby and many other languages, and unlike other cross-platform toolkits, wxWidgets gives applications a truly native look and feel because it uses the platform's native API rather than emulating the GUI. It's also extensive, free, open-source and mature.
A new sight of developing. Thinking in human's concepts and orgnizations. Analysis behaves and effects before the actual building take place. Automatically using the proper algorithms and data model. Based on a large scale descriptive library.
A synthesized large scale website/application development framework.
C++ Plugin Framework integrated with Python.
x3py is designed as a plugin-framework that uses C++ and STL. This framework can integrate with languages including Python by using SWIG.