Packet Peeper is a free network protocol analyzer (or ‘packet sniffer’) for Mac OS X. Its features include:

  • TCP stream reassembly
  • Privilege separation
  • Simultaneous capture sessions
  • Filters, which may be defined at any time. Packet Peeper uses the same syntax as tcpdump and Wireshark (or any other program that uses the pcap library).¬†For an explanation of the filter syntax please refer to the pcap-filter manual page
  • Python plugins
  • Support for pcap/tcpdump capture files