bulini (Giuseppe Surace)

Simple plugin that allows you to generate a tab container widget based on Jquery UI tabs. Each tab is a category with a number of posts customizable. 
It will display last posts of your favorite categories just put each category ID number separated by comma.
All other information (general, changelog, installation, upgrade, usage) you need about this plugin can be found here actually in italian: <a href="http://www.giuseppesurace.com/" title="Sendit Readme" rel="nofollow ugc">Post2tabs readme</a>.
<h3>Development Blog</h3>
<a href="http://www.giuseppesurace.com" title="Italian Wp designer and WordPress plugin developer" rel="nofollow ugc">Giuseppe Surace WP development blog</a>

Post 2 tabs

Your best categories in a simple tabs widget (Jquery UI Tabs).

www.gopiplus.com

gopiplus

This is a jquery based lightweight plugin to create tab display in the wordpress widget.
Check official website for live demo <a href="http://www.gopiplus.com/work/2012/11/10/tabber-widget-plugin-for-wordpress/" rel="nofollow ugc">http://www.gopiplus.com/work/2012/11/10/tabber-widget-plugin-for-wordpress/</a>
<ul>
<li><a href="http://www.gopiplus.com/work/2012/11/10/tabber-widget-plugin-for-wordpress/" rel="nofollow ugc">Live Demo</a> </li>
<li><a href="http://www.gopiplus.com/work/2012/11/10/tabber-widget-plugin-for-wordpress/" rel="nofollow ugc">More information</a> </li>
<li><a href="http://www.gopiplus.com/work/2012/11/10/tabber-widget-plugin-for-wordpress/" rel="nofollow ugc">User Comments</a></li>
</ul>
This is a jquery based lightweight plugin to create tab in the wordpress widget. Tabs can be really useful, we can save a lot of space just by placing our block of content in tabs and displaying one block at a time in the same place. Using this plugin maximum we can display two tabs. and we can display the linkable text within the tab. in the admin we have separate page to manage the tab text.

Wp tabber widget

This is a jquery based lightweight plugin to create tab in the wordpress widget.

Post 2 tabs vs Wp tabber widget