ZebraZapps is a revolutionary cloud-based authoring system that gives anyone the ability to create rich interactive media applications, quickly and easily. ZebraZapps can be shared, published and even sold. From concept to creation, ZebraZapps provides an easy-to-use what-you-see-is-what-you-get (WYSIWYG) interface.
Not free but of interest for those who create media applications.