Works great!

I needed to have multiple instances of a tabbed widget. I was using a plugin called “Tabber Tabs Widget” which worked, but it only had one widget area.

This plugin lets you add multiple, then assign them as needed to existing widget areas. So you can have multiple sets of tabbed widgets assigned to multiple sidebars.

The only think it doesn’t have is the ability to have multiple widgets on each tab, but I didn’t need that (or expect that).