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. Today, our team of trained vision scientists, developers and engineers continue to provide solutions for researchers pushing the boundaries of our knowledge of the visual system and the brain. 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. Our research-grade DLP projector, the PROPixx, provides a refresh rate of up to 1440 Hz and a fully linear gamma for precision control of visual stimuli, and is MRI and MEG compatible. The TRACKPixx3 2 kHz binocular eye tracking system is seamlessly integrated with our data acquisition systems and displays for streamlined experiment control. Scientists can integrate VPixx hardware into their own ANSI C, Python or MATLAB programs using our software APIs.