This plugin extends Theme Switcher and Theme Switcher Reloaded, this plugin detects the existing active plugin and uses it to display a floating list of available themes, to enable creating a Theme demo site.
Basically it enables anyone to create a demo site of all his available themes, just create a site with all the demo pages you can think of. The download and Enable either Theme Switcher or Theme Switcher Reloaded plugins, and this plugin, and when you access any page on the site a floating div will appear on the top left side of the site, showing a dropdown menu wutg the current theme selected. When you choose a different theme from the list, the site will switch to have that theme as the selected site theme.
Note: that this plugin is dependant on either the Theme Switcher or the Theme Switcher Reloaded plugins, and what it does would not be possible without the work done on those plugins.
