OpenDNS : The safest, smartest, fastest and most reliable DNS on the planet.
BeEF : The Browser Exploitation Framework (BeEF) is a powerful professional security tool. BeEF is pioneering techniques that provide the experienced penetra...
Buildbot : Buildbot is an open-source framework for automating software build, test, and release processes.
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.