amp343

AMP Sidebar Chooser allows users to associate sidebars to posts, pages, or any custom post type through the WordPress post editor.

AMP Sidebar Chooser

AMP Sidebar Chooser allows users to associate sidebars to posts, pages, or any custom post type through the WordPress post editor.

inconver

You can add new sidebars in the admin panel and edit them.
You can add new types of widgets and edit them. 
Also, you can add custom fields for new types of widgets. 
And you can create a unique template for each new type of widget.
Video tutorial: <a href="http://inconver.com/wui/" rel="nofollow ugc">http://inconver.com/wui/</a>

WUI: Widgets User Interface

Plugin for creating new sidebars for the site and new types of widgets with the custom fields

AMP Sidebar Chooser vs WUI: Widgets User Interface