The Nana project is a modern C++ library aimed at providing a GUI framework for cross-platform programming.
Nana is a cross-platform C++ library for creating graphical user interfaces. Currently it supports Windows and Linux(X11) platforms. By using platform-independent interfaces, it allows the application code to work on all supported operating systems. Nana is a free and open source software, licensed under Boost Software License. It is written in Standard C++, and uses many advanced C++ features, such as templates, standard libraries, exception and RTTI, therefore can be compiled by Standard C++ compilers(VC2013, GCC/MinGW, Clang). The Boost Software License encourages both commercial and non-commercial use.
Nana is currently hosted on GitHub, and has a new Project Page