[NetMonkey]

It worked pretty well with an animation from an old project: Html5: http://enwire.dk/Wallaby/Html5/ Flash: http://enwire.dk/Wallaby/Flash/

At least it works in Chrome but it looks kinda funny in IE9. For basic animations it could probably be useful.

[nailer]

Looking at it in Chrome (no love in FF3, but I suspect FF4 willchnage that) I'm actually impressed. That's a reasonable 1.0 effort.

[andybak]

FF4 isn't slated to support CSS animations AFAIK

[joakin]

Having some Chrome about:flags turned on this hanged my machine... Lesson learned!

[83457]

Actually looks better to me in chrome/html5 than flash.