18. PureData (or Pd) is a graphical programming language developed by Miller Puckette in the 1990s for the creation of interactive computer music and multimedia works.
19. Quartz Composer is a visual programming language provided as part of the development environment in Mac OS X for processing and rendering graphical data.
20. VVVV is designed to facilitate the handling of large media environments with physical interfaces, real-time motion graphics, audio and video that can interact with many users simultaneously.
21. Processing an open source programming language and environment for people who want to program images, animation, and interactions.