Antivirus Software helps to keep a personal computer protected from unwanted viruses, trojans, worms, spyware, adware, dialers, and other forms of computer infections. Antivirus protection comes either by freeware or by a yearly service subscription fee.
Antivirus programs can use a significant amount of system resources and can cause your computer to run slow. I have had several computers come to the lab that run more than one real time antivirus program. This can cause many issues to arise if you run more than one program, some of these are low memory warnings to appear or causes the computer to freeze or can cause the worse thing to happen is crash. We highly recommend finding an antivirus program that you like and stick to it and do not download or load more than one antivirus program.
Here is list of free antivirus programs that come highly recommended by our friends at Gizmo.