Actually, no news, because we know the tool for quite some time. Only now we have noticed that we have never reported on what we want now rectify that oversight. Who will install the Xcode developer tools, among other things that come with every Apple OSX DVD, later found in the System folder, the so-called Quartz Composer. With this tool you can create node-based compositing, and effects, even the most GPU-based work, and are therefore rattenschnell. Officially, the tool is applied in order to create with a few mouse clicks, a screen saver can also export as a Quicktime file is possible. The new version with OSX 10.6. Snow Leopard will be delivered, also supports OpenCL, which can also be programmed yourself kernels quickly try out. Good thing it's for free. more infos at bei developer.apple.com