libatk1.0-0 2.4.0-0ubuntu1 (amd64 binary) in ubuntu precise

 ATK is a toolkit providing accessibility interfaces for applications or
 other toolkits. By implementing these interfaces, those other toolkits or
 applications can be used with tools such as screen readers, magnifiers, and
 other alternative input devices.
 .
 This is the runtime part of ATK, needed to run applications built with it.