HttpWatch : An HTTP Viewer and HTTP Sniffer for IE and Firefox
Wireshark : Wireshark is the world's foremost network protocol analyzer. It lets you see what's happening on your network at a microscopic level. It is the de fac...
namebench : namebench hunts down the fastest DNS servers available for your computer to use. namebench runs a fair and thorough benchmark using your web browser h...
Buildbot : Buildbot is an open-source framework for automating software build, test, and release processes.
OpenDNS : The safest, smartest, fastest and most reliable DNS on the planet.