fltk 1.3.6 3D C++ GUI library

FLTK is a C++ GUI toolkit providing modern GUI functionality without the bloat. It supports 3D graphics via OpenGL and its built-in GLUT emulation. FLTK is designed to be small and modular enough to be statically linked, but works fine as a shared library. FLTK also includes an excellent UI builder called FLUID that can be used to create applications in minutes.