Flash is a binary format for multimedia content. In the Focusky, you can publish your presentation as flash web page, and the object-oriented scripting language will converted you project into SWF files that can run across platforms on browsers equipped with the Flash Player applications.
HTML5 is the next major revision of the HTML standard, which is a markup language designed to represent web content in a structured manner. In the Focusky, when you publish your animated presentation as HTML5 web page, some features of HTHL5 will help to deliver rich experiences across platforms, including devices where flash is not allowed.