What is Max/MSP/Jitter?
Max/MSP is a graphical programming environment, which means you create your own software using a visual toolkit of objects, and connect them together with patch cords. The basic environment that includes MIDI, control, user interface, and timing objects is called Max. Built on top of Max are hundreds of objects, that do a variety of rad stuff, including Jitter.
Jitter is a set of video, matrix, and 3D graphics objects for the Max graphical programming environment. The Jitter objects extend the functionality of Max/MSP with flexible means to generate and manipulate matrix data — any data that can be expressed in rows and columns, such as video and still images, 3D geometry, as well as text, spreadsheet data, particle systems, voxels, or audio. Jitter is useful to anyone interested in real-time video processing, custom effects, 2D/3D graphics, audio/visual interaction, data visualization, and analysis.