.PKT

.PKT file extension

This is the basic program to work with .PKT extension

Wireshark

Wireshark Wireshark file

Wireshark is a network packet analyzer, which presents captured packet data in as much detail as possible. It can be used to troubleshoot network problems, examine security problems, verify network applications, debug protocol implementations, and learn network protocol internals... (more)

The program works with the following extensions: fdc, rf5, syc, tpc, erf, tr1, acp, trc, wpc, pkt, wpz, enc, 5vw, apc, atc, bfr, cap, pcap, snoop and trace

.PKT extension is also supported by the following programs:

Cisco Packet Tracer

Cisco Packet Tracer Packet Tracer 5.0

Packet Tracer is a networking simulation software made by Cisco.
Ethereal

Ethereal Ethereal file

Sniffer application used to monitor network traffic, filtering by protocol.
WildPackets OmniPeek Personal

WildPackets OmniPeek Personal Peek Ethernet Packet File

WildPackets EtherPeek

WildPackets EtherPeek EtherPeek Packet File

WildPackets OmniPeek Demo

WildPackets OmniPeek Demo WildPackets Packet File

WildPackets OmniPeek

WildPackets OmniPeek WildPackets Packet File

Serving as both a network analyzer and a software console for OmniEngine.
WildPackets EtherPeek NX

WildPackets EtherPeek NX EtherPeek Packet File