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Packet Peeper

Packet Peeper is a free network protocol analyzer (packet sniffer) for Mac OS X. 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 libpcap library). For documentation see the `expression' section of the tcpdump manual page. Python plugins. Support for pcap/tcpdump capture files. Universal binary.