sentences:  AICCU is the successor of the Windows-only and Linux/BSD-variety of the Heartbeat tool that was provided by SixXS, solely to use the Heartbeat protocol.When the AYIYA protocol came into existence it was decided that to support this new protocol it would be better to merge the Windows and Unix trees into one program and give it a better appearance.The name of the Heartbeat tool was then changed to reflect that it did more than providing mere support for the heartbeats.