This is a pretty light weight program which would not affect your Mac’s performance. This is their tag line and it lives upto it. It protects your Mac from web-spawned threats, and offers email security in addition to fundamental features offered by any antivirus program. With over 150 million users, you can easily label it as one of the biggest name in the free antivirus programs fraternity. Here I am, sharing the list.ĥ Free Antivirus For Mac OS Lion And Mac OS X Surprisingly, I found few good free Antivirus for Mac OS Lion and Mac OS X. And then I looked for some free programs to scan my Mac. But soon after few months, my MacBook starting freezing a lot. When I initially switched to Mac, I never felt the need for any program to hunt virus, spam and other unwanted stuff. In this post, I would listing out the best free antivirus programs for Mac OS Lion and Mac OS X. But as mentioned, it is nothing else but a myth. Gone are the days when people believed in the myth that antivirus program is not required for Unix based operating systems. Antivirus is a must have program for every computer or laptop.