Libnui

High Quality Content by WIKIPEDIA articles! libNUI or nui is a C++ framework designed for use in creating multiplatform applications with hardware accelerated user interfaces. OpenGL and Direct3D are used in conjunction with GPUs to create visual interfaces. The library is dual-licensed under the GPL and a commercial licence, for companies reluctant to release their source code. Support is provided for Windows XP and Vista, Mac OS X, Linux, and the iPhone