The first module is a DHTML calendar component, a wrapper around Dynarch Calendar, an LGPL calendar widget. I consider it the "Cadillac" of this space, and it snaps into Tapestry quite nicely.
Just dropping this new JAR into the classpath not only makes the new DateField available, but also enables it as the default date editor when using BeanEditForm.
The library requires Tapestry 18.104.22.168 or better.
I expect to add many small utlilities here.