chrisguitarguy

Arbitrary Sidebars allows you to add widget areas via an page in the WordPress admin area. What you do with those sidebars on the front end is up to you and your theme.
This plugin requires PHP 5.3+. Please check your server configuration before installing.
Some use case ideas:
<ul>
<li>The end user wants to associate sidebars with individual posts and pages. This plugin ould provide half that functionality: easily creating widget areas.</li>
<li>You need reusable content blocks and want to take advantage of the widget system.</li>
</ul>

Arbitrary Sidebars

WordPress.org

webdevstudios

Justin Sternberg

Gary Jones

shaunandrews

Plugin project for refreshing WordPress core’s widget interface. 
https://make.wordpress.org/ui/tag/widgets/

WordPress Widgets Refresh

Plugin project for refreshing WordPress core's widget interface. http://make.wordpress.org/ui/tag/widgets/

Arbitrary Sidebars vs WordPress Widgets Refresh