After working on the back-end site i ‘m now dealing with the front-end for multi-touch applications. After some research i come finally to the incredible MT4J framework. As I’m a real java fan i pleased to see that this framework exists and it’s absolutely brilliant! I don’t know what this guy is doing all the time but he is a master of software architecture & openGL . It’s impressive to see what performance boost you get if you work with openGL in the right way.With this framework your are able to concentrate on the interaction design and you could integrate stuff from processing, so there are a lot of code floating around the web you could use.

It’s a big argument to stay on the java platform.I know most of the people love Flash, but java is in my opinion generally the greatest platform you can develop with. You got eclipse, processing,server&database stuff, openGL with jogl and a lot of physical computing code with wiring for the arduino board. And the language itself is a thousand times better to deal with as with C++.

If you want start with multi-touch development you have to decide what topics you are interested.
Some prefer only the interaction design, others trying to build their own soft-/hardware from the ground. Whatever you like the nuigroup forum is THE starting point on the net. There are a lot of information spread all around the forum. Without the help of so many community members I never would have achieved the things i develop.

To get the historical background and wider context on this field you should go to the site of Bill Buxton. He is a Principal Researcher at Microsoft and if somebody has a credibility on this topic then he. There is a very interesting talk from the CES 2010 with him about NUI: CES 2010: NUI with Bill Buxton