.ATC

.ATC file extension

This is the basic program to work with .ATC extension

Wireshark

Wireshark Wireshark file

Wireshark is a network protocol analyzer that lets you lets you see what’s happening on your network at a microscopic level. It can perform deep inspection of hundreds of protocols. Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility... (more)

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

.ATC extension is also supported by the following program:

Ethereal

Ethereal Ethereal file

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