We just released a tabbing plugin for jQuery—tinytabs. It is open source under the MIT license. You can see it in action and download it here.

While jQuery UI and a bunch of other plugins support tabbing, sometimes, you don’t need all that overheard just to render a simple tabbed UI. I wrote tinytabs for this reason, to eliminate the unnecessary overhead. At less than 1 KB (minified), it does exactly what it is designed to do.