BEST FREE ANTIVIRUS SOFTWARE FOR
WINDOWS 8::::
Avira AntiVir
Here, we have our first virus scanner cum protector which provides excellent protection against spyware and rootkit etc. The reason we put it on the rank#1 is that it has very high virus detection rate in compare with any other antivirus freeware for Windows OS. That is directly indicates that you are pretty much guarded from all virus and malwares.
Another worthy feature of this freeware software is that it does not scan the mail automatically, however when you try to open any infected mail, it protects your PC

Avast! Antivirus Home Edition
The biggest rival of Avira AntiVir is none other than Avast itself, there is a toss-up between both antivirus for the rank#1& #2 position. The most popular antivirus which you will find out easily on every second computer is Avast, and it is due to the easy user interface and quick responsive behavior. The overall virus detection rate of this antivirus is good and it helps to keep your PC in healthy state. This software supports all Windows including Windows Vista, 7, 8, XP, 8.1 etc.



AVG AntiVirus
AVG is another popular antivirus freeware which is trusted by 80 million users around the world. The AVG antivirus provides following protection:
Antispyware protection against virus, adware and Trojans.
LinkScanner Active Surf-Shield protects your PC from any infected website.
User interface is really very intuitive, but relatively less virus detection rate.

A-Squared
a-squared is renowned as a free personal Antivirus software for Windows OS, this freeware antivirus software easily detects virus, Trojans and other infectious elements but the user interface is not intuitive. Overall performance of this antivirus software is not good- and slows down the computer while running scan.

Rising Antivirus Free Edition
If you are looking for the overall virus protection rootkit, then Rising AntiVirus Free Edition is all you need. But before exploring this software I would recommend you to try one of the antiviruses mentioned above in the list.

Virus or threats are such miscreants which may harm your PC and data, or infect your system. There is no such cure to prevent these attacks; just you can reduce the chances to get your PC and your system data infected. Here, we have a list of Top 5 Best Free Antivirus for windows 8.1 which may help you to save your data and system from such attacks.