TemplateSwitch_XH allows the user to choose another template for the whole website and can be called as Selectbox or as List, in the template or on a special page.
It's a coproduction of Martin Damken and Gert Ebersbach, the CodeBase is from Martin, and Gert has made the CMSimple-Plugin with all it's functionality.
TemplateSwitch_XH is utf-8 encoded and made for CMSimple_XH 1.2 utf-8 or higher.
Download: http://www.ge-webdesign.de/cmsimpleplugins/?Eigene_Plugins/templateswitch_XH