Ethereal
From SolidBest
Ethereal - The world's most popular network protocol analyzer.
Powerful Multi-Platform Analysis
Ethereal is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education. It has all of the standard features you would expect in a protocol analyzer, and several features not seen in any other product. Its open source license allows talented experts in the networking community to add enhancements. It runs on all popular computing platforms, including Unix, Linux, and Windows.
Keywords
Packet Sniffers, Packet Analyzers, Packet Capture, Packet Filter, Packet Filtering, Packet Monitor, Packet Monitoring