MaaTec Network Analyzer

Protocol Analyzer (or 'packet sniffer') with real-time display
Real-Time Statistics (displayed in tables with sortable columns)
Scheduled Collection of protocol data into one or more files (Pro Version)
Network Load over Time Statistics (per system, protocol, connection, etc.) (Pro Version)
Network Report Generator (Pro Version)

The MaaTec Network Analyzer is a tool that allows to capture, save, and analyze network traffic on a LAN or a DSL internet connection. You can use it for network troubleshooting, to analyze an existing network infrastructure, or for long-term network monitoring. The Network Analyzer combines following major components in one application:
Click on the pictures to open full size screenshots or a demo network report that was created with the application's report generator.