Not-So-Technical - Personal Spam Tracking Software

Net.Demon Software - Features include text editor, finger, traceroute, DNS lookup, ping, and more.
Internet browser based

Sam Spade Personal - Freeware downloadable version of Sam Spade Online. Great product!
Internet browser based

VisualRoute - A visual, fast, and integrated ping, whois, and traceroute program that automatically analyzes connectivity problems, displaying the results on a World map. Not free - $49.95

Geektools - WHOIS, traceroute
Internet browser based