Pixel Toaster is a portable open source framebuffer library for C++. It provides a fast and easy way to get your pixels on the screen. Floating point and truecolor pixel formats are supported on Windows, Mac and Unix.
VRVis is a programmer's toolkit for rapid development of Virtual Reality applications in the field of geospatial data visualization. It is based on VR Juggler and the Geospatial Data Abstraction Library (GDAL).