Looks like Sebastian Heidbrink ported the JQueryWidgetBox project for Seaside to VA Smalltalk and uploaded it to VASTGoodies.com.
I started the JQueryWidgetBox project in November 2009 and meanwhile various people contributed wrappers for seaside widgets to it.
Code is MIT, initially I thought about a different license model: everytime one uses the project in a production environment a new widget has to be contributed back to the project. ;)
There are so many good jquery plugins available that could be wrapped for seaside and make the web apps look much nicer. Feel free to help.
I hope that this new port will also help the project to grow...