Cisco Packet Tracer 5.3.1 is a software product for Windows developed by Cisco Systems, Inc.
It is reported that the following Windows processes are part of Cisco Packet Tracer 5.3.1:
If you want to remove Cisco Packet Tracer 5.3.1 from your computer, just go to Start > Control Panel > Add/Remove programs and select Cisco Packet Tracer 5.3.1 from the list of programs.