Best Free PC Antivirus Software Review....

Best Free PC Antivirus Software 

Windows PC users need a strong antivirus program to ward off malware attacks, to keep their computers running efficiently, and to safeguard their online identities and personal information. Paid antivirus suites have many features to protect children online, manage security on mobile devices, and monitor a computer's firewall, software updates and other features. But some users just don't want to — or can't — pay a yearly subscription fee for those extra features.

If that describes you, you've come to the right place. We've evaluated the most widely used free antivirus programs based on their malware protection, system impact, ease of use and useful extra features.
So which free PC antivirus product is right for you? Of the six free antivirus programs we reviewed, Avast Free Antivirus came out on top. It offers very good malware protection, has a small system-performance impact and includes features that rival those of midpriced paid antivirus suites, such as a password manager and a hardened web browser.
If you'd rather not fuss with settings, then try Bitdefender Antivirus Free Edition, which has even better malware protection but doesn't let you adjust (or do) much other than ward off threats.

How We Tested:-

To evaluate installation, ease of use, interface and performance impact, we installed each AV program on the same Asus X555LA laptop, which ran Windows 10 and featured an Intel Core i3-4005U processor, 6GB of RAM and 36GB of data on a 500GB hard drive.
We conducted our own tests on how much each antivirus product affected our laptop's performance, using our custom OpenOffice benchmark. We timed how long it took to run a quick scan and a full scan while the laptop crunched numbers in the background.
We also assessed how easy each program was to use, the number of useful extra features it offered (including free add-on software) and how insistently each program nagged us to upgrade to paid software.
Our malware-detection data comes from two independent evaluation labs: AV-TEST in Germany and AV-Comparatives in Austria. Each lab regularly tests major antivirus products for their abilities to detect zero-day malware and other threats.

Windows Defender:-

Windows Defender's once-subpar malware-detection rate has gotten better, but that doesn't mean you should rely on it just yet. The software, which is part of Windows 8.1 and Windows 10, still came in last among the six products we reviewed, and its high rate of false positives confirmed that ranking. Windows Defender has an inexplicably high system impact during full scans, and does nothing to protect non-Microsoft browsers from online malware. It also has nearly no extra features. Even if you don't want to pay for antivirus protection, you can do better than Windows Defender.

This Is Very Good Antivirus.....

Thanks..... :)