WhoISP

Tools SW
CAIDA Tools
gendns.pl - gendns creates forward and reverse maps, and primary and secondary conf files (bind 8).
NeoTrace - NeoTrace is a high-speed graphical traceroute with integrated whois and ping. It is extremely fast, simple to use and returns a wealth of information.
Netperf - Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirecitonal throughput, and end-to-end latency.
Online Tools
Ping Plotter
Speedtests
VisualRoute - VisualRouteTM is a visual, fast, and integrated ping, whois, and traceroute program that automatically analyzes connectivity problems, displaying the results on a World map.