Smartwin ++
The C ++ GUI library that complies with the BSD license protocol is built on Windows APIs, but can still be used on Linux/xnix by using winelib. It also supports Pocket PC and Windows CE-based applicationsProgram...
Xclass
The xclass library is a C ++ GUI toolkit in X Windows. It is based on xlib and consists of a set of components, from simple components to complex ones, including many common dialogs. The components have the appearance style of MS Windows.
Windows ++
Windows ++ is a lightweight C ++ application framework that allows you to use Windows in your c ++ program.
Fox
Fox is a convenient and effective basic toolkit for C ++ to develop graphical user interface libraries.
V c ++ GUI framework
V is a free and portable C ++ graphical user interface framework designed to develop applications on different graphic interfaces.
WxWidgets
An open-source C ++ GUI framework simplifies cross-platform programming.
Gtkada
A complete graphic toolkit for ada95
Fltk
Fltk is a cross-platform C ++ GUI toolkit for Unix/Linux (X11), supporting Microsoft Windows and MacOS X
Lesstif
Lesstif is the OSF/Motif version of hungry programmer.
Open Motif
Open motif is a graph library in UNIX environment.
Microwindows
Microwindows is an open-source project designed to use Features of Modern Graphic window environments on small devices and platforms.