AppKiller 3.2 for Mac was available as a free download on our application library. This software for Mac OS X was originally created by serialangels. The application is included in System Tools.
From the developer:
AppKiller is a simple menu bar application that allows the user to quickly kill running applications. In addition, AppKiller allows the user to send any of the underlying BSD signals to any process on the system including those owned by other users, including root.
You may want to check out more Mac applications, such as TM Error Logger, HDCleanUp or CLIX, which might be related to AppKiller.