The onion router
Otherwise known as the TOR browser, a browser for you to surf the amazing cyberspace. It is much faster than Netscape. Do cool things with it like hire somebody to kill another, watch somebody be murdered, or buy heroin from the silk road. An amazing array of things you can do with the wacky web!
I just sold an exclusive machine gun for only the army, then filled a tranquilizer with syringes of illegal durgs on the onion router!