changed: - GridFlow is a video plugin for PureData, a Ruby scripting host for PureData, a multidimensional array processing system, and it's GPLed too! It has been the heart of several gallery exhibits, museum exhibits and live performances. GridFlow is typically used in camera-to-projector setups, though it can run in any way (including file-to-file). GridFlow is designed to be flexible first. GridFlow is not a toolbox of special effects: it's a toolbox for making your own special effects!