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Cocoa Packet Analyzer is a native OS X implementation of a network protocol analyzer and packet sniffer. It uses the industry-standard PCAP packet capture format for reading, capturing and writing packet trace files.

Supports the Cocoa bundles technology for creating TCP/IP application layer protocol "Analyzer PlugIns". Features a quicklook plugin.

What's New

Version 1.31:
  • fixed date format in packets view
  • fixed Seq and Ack values in tcp-analyzer
  • packet contains filter now case-insensitive


OS X 10.5 or later

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4.1 16


Current Version (1.x)


Downloads 67,814
Version Downloads 8,979
License Free
Date 06 Aug 2014
Platform Intel 64 / OS X / Intel 32
Price Free
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