You can download the plugin here at http://www.stiqr.com/stiqr.zip
Stiqr is a site editor like no other. Stiqr allows you to stick anything on your website anywhere, making this the only WYSIWYG that allows a full site-wide editing possible.
Stiqr is still currently in beta and it's free.
I'd like to hear your feedbacks on what you think so we can better improve our product.