This is Mac version of an application called Kinect2Scratch, which is developed by Stephen Howell. It sends data from Microsoft Kinect controller to Scratch, which is the programming environment developed by MIT Media Laboratory.
Anyway...
You can use Kinect from Scratch on Mac!!!!
You have to use USB separate adaptor. It is not included when you bought Xbox which include Kinect. You can buy it from here.
It doesn't work with Kinect for Windows. Please use Kinect for Xbox360.
I don't check whether run this app on 10.5 or not.
First of all, download kinect2Scratch4Mac from here. Next, download this project and open it. This project is used for testing of kinect2Scratch4Mac. After that, turn on "remote sensor connections" from Sensing>Slider sensor value(Right Click) in Scratch. Then, connect Kinect to your Mac, and run this app. Now, you can get data from kinect as sensor values!
If kinect2Scratch4Mac does not run:When kinect2Scratch4Mac does't run
You have to build kinect2Scratch4Mac yourself.
If you don't have it, you can get it from here.
[!] Don't move an app from bin folder. Please use alias as Application. If relation of place of Application is changed, the app won't run.
There is Windows version of Kinect2Scratch by Stephen Howell.
Kinect 2 Scratch | Free software for hooking Scratch up to Kinect