Sebastian pointed me to http://shareitproject.org today. Have not seen this page before.
The page includes a Squeak app for DiamondTouch (DiamondTouch table is a multi-touch, interactive PC interface). From the people page it looks like Jochen “Jeff” Rick helped shaping it, I know him from his Swiki implementation and Squeak and Pharo contributions like QRCode.
He wrote several apps in Smalltalk as you can see on his page. Nice!