1)   tcpdump for Windows 3.9.8 build 4.1
TCPDUMP for Windows is a clone of TCPDUMP for UNIX systems, the popular command-line packet capture tool. An advantage of TCPDUMP for Windows is that (1) it supports 1Gbit networks and (2) it is portable, i.e. it works from removable devices.

 2)   Berkeley Packet Monitor 1.5
Berkeley Packet Monitor is a Shareware Mac OS X application that can be used to monitor network traffic.