I came across this site while looking for software to install onto my wife’s Nokia E65 phone. Because it uses Java it also runs on our PPC phones. This piece of software is similar to Yahoo Widgets where you put little files of software onto your desktop, but this time you put them onto your PPC. Potentially what the files do are limited to whatever a developer can create.
The site says it is still in beta, but there are already a large number of widgets to try out. I have only used it briefly, but have tried out BBC, Breakout and Sudoku. The files worked fine, but Breakout was a little on the very basic side.