Adobe has released a new web motion and interaction design tool called Adobe Edge.It allows users to create animated content to websites and it uses HTML5, JavaScript and CSS3 web standards.It is currently available for free (registration required).
Main features:
Intuitive user Interface.
Supports web graphics such as SVG, PNG, JPG or GIF files.
Add motion to existing HTML content.
Easily choreograph animation with the timeline editor..
Copy and paste transitions, invert them, and choose from over 25 built-in easing effects for added creativity.