HttpWatch : An HTTP Viewer and HTTP Sniffer for IE and Firefox
LibreNMS : A fully featured network monitoring system that provides a wealth of features and device support.
OpenDNS : The safest, smartest, fastest and most reliable DNS on the planet.
Wapiti : Wapiti allows you to audit the security of your web applications.
It performs "black-box" scans, i.e. it does not study the source code of the applica...
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 facto (and often de jure) standard across many industries and educational institutions.