bITAnimateButton has been created by Blupixel IT Srl and is released under the GNU General Public License.
To check it, see http://www.gnu.org/licenses/.

It creates an animated button starting from an html like this:
<a href="http://www.blupixelit.eu"><img src="images/twitter.png" width="128px" height="128px"/></a>

Read the README in the package for more information on how to use it.