Josh describes MaiTai this way:
MaiTai is an open source tool for building interactive artwork. You create interesting sketches by wiring different blocks together with lines. There are blocks to produce graphics, process mouse and keyboard inputs, connect to webservices, and perform complex graphical transformations. The end result is limited only by your imagination.
It’s a bit hard to picture exactly what MaiTai is – but it is very easy to try it out. Not only can you create very cool visual effects – but you do it in an equally cool visual way, with absolutely no programming involved.
It’s an excellent example of the user experience expressive client applications and JavaFX are capable of delivering.