RespondCMS is an open source CMS/WYSIWYG website builder. It allows you to host a website builder and create your own templates. Visitors can then create their own websites using the templates you've previously made available and after a trial period pay a monthly fee to use their own domain name and gain access to advanced features.
Does anyone know of any others like this? Another established example is: http://share.ez.no/
What I'm looking for is a framework to use for my own small click-and-drag website builder business. My friends and I, around 10 of us, want to make hundreds of templates over the next few years.
Many thanks for your help!