Hey, Daya. I did check out your plugin before I made both — CFW and the Tabbed Widgets plugins.

I wanted the ability to use other widgets inside the single tabbed widget, while CFW takes care for plugins which don’t offer widget interface. Thus the combination of both offer more flexibility and increased variety of use.

In addition, Tabbed Widgets make use of the original theme styling (defined at function.php) for each widget, and it uses the latest version of jQuery which will be supplied with the upcoming WordPress 2.5.

But your plugin is currently much useful because it is available public while mine is secret and hidden under the hood :)