Best Free Antivirus Software

The Top Ten
1 Avast Free Antivirus

Avast Free Antivirus is easy to use, reliable, and secures the protection of your computer. And it's FREE!

I use Avast. From my experience, I know it's really fast and reliable. Very good antivirus. And it's very easy to use.

Very good. I just don't like the pop-ups from it that I get sometimes, but otherwise, it's really good.

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2 Microsoft Security Essentials

Its simplicity is what makes me choose this one over Avast.

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3 AVG Free

Best among all free antivirus software.

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4 Panda Free Antivirus

I have been using the same free Panda antivirus for the last three years. Don't ask me how, but I must confess it's the antivirus I trust the most. It caught a "Recycler virus" when no other antivirus could.

5 BitDefender Free Edition
6 Microsoft Windows Defender

Windows 8, 10, 8.1, and 7 operating systems feature Windows Defender as the official antivirus.

7 Avira Free

Avira doesn't demand as much of your system as Avast does, and both provide poor protection for your PC, as do all free security software.

Avira is the best security for your computer, second only to military security.

The only bad thing about Avira is that it's slow. Other than that, it's a great antivirus.

8 Smadav

It's a portable antivirus. It's not powerful but is so easy to use.

9 NANO Antivirus Sky Scan

Scan your files with the cloud scan service of NANO Antivirus. Moreover, if the desktop version of NANO Antivirus is installed on your device, you can use NANO Antivirus Sky Scan as a functional tool. It's specially designed for Windows 8 and makes control of your antiviral protection extremely easy.

The Windows Store application for Windows 8, 8.1, and 10 provides easy-to-use access to NANO Antivirus' cloud scan service. If the desktop version of NANO Antivirus is installed on the target device, NANO Antivirus Sky Scan can also be used as a native metro-style shell for the desktop solution.

10 Comodo Firewall Antivirus

It's the best, and I am an expert and have tried a lot. Comodo has shown me over the years that it can not only protect but also lets you take control over the options and your PC. Unlike other security software, which thinks it knows what's best for you.

It's pretty much the best free antivirus. It acts fast on virus threats and viruses.

The Contenders
11 360 Total Security
12 ClamWin Free Antivirus
13 MalwareBytes Anti Malware Malwarebytes Inc. is an American Internet security company with offices in Santa Clara, California, Clearwater, Florida, Tallinn, Estonia and Cork, Ireland. It specializes in protecting home computers, smartphones, and companies... read more

Works well. I pair it with Avast. They're a good pair.

14 PC Media Anti-Virus
15 CYSEC Antivirus
16 Kingsoft Antivirus
17 Emsisoft Anti-Malware Emsisoft Anti-Malware is a security software solution designed to protect computers from malware, viruses, and other cyber threats. Founded in 2003, the New Zealand-based company offers dual-engine scanning technology and real-time protection features. Emsisoft focuses on delivering lightweight yet... read more

This is the only freeware dual-engine scanner around. It includes the Bitdefender scanner too.

18 Immunet Protect Free
19 Kaspersky Free
20 Rising Antivirus Free Edition
21 ByteFence

ByteFence is a wonderful complement to traditional antivirus programs. The tool is available in two versions:

- The free version has all you need to stay safe on the web, with a nice summary dashboard and manual scans.

- The paid version includes features like automatic and scheduled scans, as well as real-time protection.

All in all, it's a great solution at an affordable price.

22 Comodo Internet Security
23 Sophos Anti-virus
24 IObit Malware Fighter
25 PC Matic
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