free cocoa packet sniffer for OSX

free cocoa packet sniffer for OSX

According to the Cocoa Packet Analyzer website:

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


  • Basic packet capturing (libPCAP/ tcpdump filter expressions can be used).
  • Analyze, display and filter packet trace files.
  • Supports PCAP packet capture format.
  • Quicklook plugin included – it is basic but at least you can get an overview over packet trace files in finder.
  • Intel 64-bit CPU support.
Cocoa Packet Analyzer screenshot

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