Syzygy is a programming toolkit for writing virtual reality or other graphical applications.

Syzygy applications can run on a single computer, but Syzygy is especially designed for the creation of applications to run on clusters of networked computers. Programs or instances of the same program running on different computers in the cluster communicate with one another and share data. The cluster as a whole effectively becomes a single computer with multiple screens and input devices. The rendering of your virtual world is synchronized on all of the computers (to within a few milliseconds), so different screens in the cluster give you different simultaneous views on the virtual world. Included utilities handle communication with 6DOF trackers and other input devices. Spatially-localized sound is supported using the FMOD libraries and non-localized text-to-speech on Windows.