Tumult’s Hype is a great little tool but currently only available for Macs. We’ve used this tool for both creating interactive widgets for EPUB3 and responsive interactive webpage animations.
The big advantage with Hype is that it gives such great feedback about which of the effects you use in your animations will work with certain browser versions. So you can be confident that your animations will display correctly.
It also has the ability to see your animations on iOS devices by using it’s iOS app Hype Reflect.
