RawCap - Sniffing for Windows

RawCap is a free command line network sniffer for Windows that uses raw sockets.
 

Properties of RawCap:

• - Can sniff any interface that has got an IP address, including 127.0.0.1 (localhost/loopback)
• - RawCap.exe is just 17 kB
• - No external libraries or DLL's needed other than .NET Framework 2.0
• - No installation required, just download RawCap.exe and sniff
• - Can sniff most interface types, including WiFi and PPP interfaces
• - Minimal memory and CPU load
• - Reliable and simple to use

You can download RawCap.exe here.