VPixx Technologies is a privately held company serving the vision research community by developing innovative hardware and software tools for vision scientists. Founded in 2001 by Peter April, VPixx Technologies has built an international reputation for supplying quality instruments to researchers and teachers in the fields of visual psychophysics, electrophysiology, cognition, and fMRI. Our revolutionary VIEWPixx and DATAPixx graphics and data acquisition systems provide vision scientists with a hardware toolbox implementing high performance video, analog I/O, digital I/O, and audio I/O, all with microsecond synchronization to video refresh. Scientists can integrate the VIEWPixx and DATAPixx into their own ANSI C, MATLAB or Python programs, or take advantage of the high-level VPixx visual testing program.