Avast Free Antivirus is “the most well-rounded free antivirus program out there” and detects about 95 percent of malware. You can pay for programs that will beat that benchmark, but this was “the only free product we looked at that didn’t falsely identify a single safe file as a piece of malware.”
TrackMeNot.org offers a Firefox and Chrome add-on that prevents Yahoo, Google, and other search engines from creating a profile of you. TrackMeNot “inundates the engines with a blizzard of search items” so that your own searches get lost in the noise.
CyberGhost VPN Free is a program that temporarily replaces your normal IP address with a ghost address so that you work online anonymously. It’s perfect if you worry, when connected to the Internet at a public hot spot, that a hacker could intercept passwords and other personal information.
Source: PC World