BrainVoyager QX is a highly optimized and user friendly software package for the analysis and visualization of functional and structural magnetic resonance imaging data sets. In order to obtain maximum speed on each platform, BrainVoyager QX has been completely programmed in C++ with optimized and highly efficient statistical, numerical, and image processing routines. The 3D graphics environment ("surface module") has been implemented using OpenGL. The interactive graphical user interface was built using the award-winning cross-platform Qt C++ toolkit. In combining the best cross-platform technology, BrainVoyager QX provides a native and responsive user interface on all supported platforms. Get BrainVoyager QX and give it a try to see what its all about! Note, that BrainVoyager QX requires a HASP cross-platform dongle for a single computer or a network dongle providing "floating" licenses. The HASP license system allows you to use the program on Windows, Linux and Mac OS X.