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.