PacketStuff Network Toolkit contains a set of very well-known tools for network analysis, fingerprinting, trafiic monitoring, etc.: ethereal, nmap, ngrep, tcpdump... All these tools are compiled with Packet Sniffer SDK, so you can launch them from any (removable) disk. Installation of the WinPCap is not required. Download, unzip, and run.
Software that can be used as an alternative to PacketStuff Network Toolkit: