How To Efficiently Set Up WordPress Theme Demos
If you’re a WordPress theme author of multiple themes, then you’ll probably want a more efficient way of handling “live demos” than setting up a brand new WordPress installation on each. I personally use the theme switcher plugin on my live demo site. What this plugin will allow you to do is set up a link to preview a theme installed in your wp-content/themes/ folder, whether it’s the active theme or not. This plugin also has a function which will make a dropdown list of all the themes installed on your blog, providing links to preview each theme.