A plugin that give you control for show or hide widgets.
Allows you to create widget areas easily and dynamically. You also can use shortcodes for each widget in posts or pages.
This plugin allows for the creation and management of widget sidebars on a per-page basis from a single dynamic_sidebar() call in your theme sidebar.
Easy Widgets plugin lets you easily create widgets in WordPress.
Control which snippets of content get displayed to your visitors based on Scheduling or Geo-Location.