I like to have xplico to be included in a Backtrack repository.:

Xplico - Internet Traffic Decoder. Network Forensic Analysis Tool (NFAT)

---- cut ----
The goal of Xplico is extract from an internet traffic capture the applications data contained.
For example, from a pcap file Xplico extracts each email (POP, IMAP, and SMTP protocols), all HTTP contents, each VoIP call (SIP), FTP, TFTP, and so on. Xplico isnít a network protocol analyzer. Xplico is an open source Network Forensic Analysis Tool (NFAT).
--- cut ---