Introducing Sencha Animator: The CSS3 Alternative to Flash
sencha.com
sencha.com
Brilliant space to be in; customers are used to paying big bucks for Adobe solutions. These guys are probably going to make a lot of money.
Nonetheless, it's an extremely impressive piece of software. Not sure that CSS3/Transitions is the best tool for this, SVG/SMIL are much more suited for animation. I made a similar tool ~4 years ago (using HTML5, and Ext as well).
Being CSS3 based also threw me completely. Adobe has already demoed some great things with their canvas export functionality. One would also assume that the browser acceptance of this type of animation would be far greater than CSS3 transitions. It could even degrade to VML for older IE versions to achieve the more basic effects.
I personally would prefer using the canvas though, especially if it becomes HW accelerated across the board.
Seriously though this looks like an amazing piece of software that will finally bring the full power of CSS3 animations to a much broader range of designers.
Adobe Edge Prototype - their new HTML5 animation tool:http://www.gizmag.com/adobe-edge-html5-animation-tool/16741/
and also Flash Pro can export to an HTML file.http://www.youtube.com/watch?v=ryZP00_KhYE
Please note that when I view the demos on your site the animation starts before all the content used in the animation is downloaded. It is kinda cool in a way because I see an image downloading as it animates off the screen.