ITMTouchBridge is a touch screen driver for the Macintosh.
It doesn't require an installer: just copy it inside your applications folder and run it.
ITMTouchBridge has been successfully tested with the Flatron L1730SF LG monitor running on OS X v10.4.11 and v10.5.6 and v10.6.2. It is currently compatible with the ITM touch screen USB controller used by LG and some other manufacturers.