NBMonitor tracks your Internet bandwidth (upload and downloads) usage, monitors all your Internet, it shows all the active connections you have to the Internet at any given moment and also the volume of traffic flowing through them.
This software is not reviewed yet.
ArpCacheWatch monitors Windows ARP cache and allows to send an ARP request.
Very simple and fast HTTP traffic generator for testing web applications
BHO Scanner gives you a quick look at the Browser Helper Objects installed on PC
NetSendFaker allows you to send anonymous Net Send messages.
Nsauditor is a network security auditing system capable of performing real-time traffic and protocol analysis, showing detailed listings of all TCP and UDP endpoints on your system.