Adobe latest, Edge is software (Windows and Mac) enabling you to create HTML5 animations with a nice easy intuitive interface that will be familiar to video editors, especially anyone familiar with After Effects. See some samples of what it can do here
Import your elements (gif, png, jpg, etc.) and then animate them on the timeline using keyframes. When you’re done, Edge will export the HTML, java and CSS files ready for you to upload. Edge is FREE…for now. Get it while it’s still in public beta.
Free HTML5 software