Best Antivirus Software For Windows PC in 2021

The best antivirus for securing your Windows PC or laptop and protecting your personal data - tested and reviewed by our experts. By clicking on the product name in the list below you can easily get updated prices, technical specs and additional info about each product. All antivirus programs in our list have been tested and found compatible with Windows OS.

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product of the year 2021
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Award-winning antivirus. Trusted by 10 million users around the world.

  • Unbeatable in terms of Value-For-Money
  • Multi-level virus protection and outstanding detection rate
  • Includes VPN, Firewall and many other security enhancements
  • Save 80% on the newest 2021 Edition via our link!
Best Overall
From $19.00
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Norton is one of the most well-known brands in the competitive antivirus business - and with good reason...

  • Protect your PC, Mac or mobile device
  • Won the 'Best Protection Award' from AV-TEST
  • Virus Protection Promise (Money Back Guarantee)
  • Best Parental Control features
Best For Families
From $39.99
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Avira Antivirus is a German company with more than 30 years of experience, so quality is guaranteed

  • First class malware protection
  • Effortlessly detects all known ransomware threats
  • Capable of repairing damaged files
  • Lightweight updates don't impact system speeds
Very Good
From $47.99
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Advanced machine learning antivirus with many added features at an incredible price + a FREE VPN. Highly recommended new security package!

  • Highest levels of protection
  • A free VPN included in every package
  • Clean user interface
  • No performance impact
Very Good
From $35.49
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PC Protect

This 'ultimate antivirus' offers an antivirus engine, real-time protection, firewall, ad blocking, disk cleaning, startup program management, a browser manager and more.

  • One of the most accurate malware detectors
  • Received 4.6/5 Trustscore on Trustpilot (from 673 reviews)
  • Offers tune-up tools for optimizing system performance
  • Does not hog resources or slow you down, even on an old PC
Very Good
From $24.95
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BullGuard is characterized by high ease of use, comprehensive protection and practical additional functions at an incredible price point.

  • Incredible features for an unbeatable price
  • Exceptional anti-malware with 3 layers of protection
  • Fast, easy to handle and manage
  • Patent pending Game Booster for gamers
From $29.99
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Heimdal is one of the few antivirus programs that work in addition to other built in antivirus software, such as Windows Defender

  • Neat Network Monitoring
  • Swift Software Patching System
  • Effortless Setup & Clean Interface
  • Superb Support for Customers
From $29.99

McAfee has won more than 50 awards for virus protection last year

  • Protection for 10 Devices at an unbeatable price
  • Very user friendly application, installation and control
  • Protects 325 million devices worldwide
  • AV-TEST rated McAfee 6/6 for performance
Offer Not Available

Bitdefender security solutions are constantly collecting top marks from various testing centers and publications worldwide

  • PC MAG Editor's Choice - 6 years in a row!
  • Absolute security for Windows, Android, Mac and iOS
  • 500 million satisfied users worldwide
  • Parental control offers parents additional online security
Offer Not Available

Avast protects your computer well and contains several important security tools to keep your system free from viruses and hackers.

  • Excellent Scores in Third-Party Lab Testing
  • Very good free version of the software
  • E-Mails without spam - keeps your inbox clean
  • Gamer mode is a must if you play many games online
Offer Not Available

Do I need antivirus software for Windows PC security?

Think about it this way, would you leave your front door wide open at night? Doing so would be like an open invitation to intruders and burglars. In the same manner, leaving your Windows PC unprotected will attract all sorts of malicious threats - viruses, botnets, DDoS attacks, ransomware, malware infection, phishing, among others.

Is a free antivirus program sufficient for PC protection?

Being the most popular operating system in the world certainly makes Windows a magnet for viruses and malware. Thankfully, every PC from Windows Version 8 and up now comes with a built-in free antivirus called Windows Defender. But the question is, is it even enough? Is it able to fend off serious threats such as ransomware and spyware? Is it good enough on its own or would you need to bundle it with yet another free software?

The reality is that you can’t really rely on a free antivirus software to keep your computer and personal info safe. Even the enhanced Microsoft Defender version that comes pre-installed on your Windows 10 is not entirely foolproof.

Studies also showed that Defender lags behind other antivirus softwares when it comes to protection against ransomware and zero-day attacks. It also failed to block malware as it was coming in and there were instances when the malware scans failed altogether. Another thing is that it lacks all the useful extras that now come with other antivirus solutions: password manager, parental control, backup up options, and more.

Just like any free antivirus program, Defender does basic cybersecurity protection but we wouldn’t trust it to keep our devices 100% protected. After all, our computers are chock-full of sensitive information such as passwords, credit card info, bank account details, and personal photos. Decent Internet Security for Windows now costs less than $40 per year on average so you're better off getting protection than risk everything just to pinch a few pennies.

What to look for in a decent antivirus software for Windows?

Choosing the best antivirus solution can be an overwhelming task with so many options available. Considering that your online identity, personal data, and financial information are at stake, it’s definitely not something to be hasty about. In general, there are a few factors we consider important regardless of your individual needs.

First of all, you need something that offers 24/7 protection through constant updates and automatic scans. This guarantees the maximum detection rate so you can detect the presence of any malware or adware before it’s too late.

It is also worth noting that phishing and ransomware attacks are often sent through attachments and email links. Your spam filter is usually able to keep most of these phishing emails out of your inbox but not all. Thus, it is important to have antivirus software that offers an extra layer of protection to prevent phishing attacks.

Another thing that should be on your checklist is compatibility. There are antivirus programs that work best on Mac and others that are more suitable for Windows devices. If you’re a Windows user, make sure you are choosing the right version for your specific OS.


Disclaimer: Top10Antivirus.Review is a free service. We receive commissions from the antivirus companies we recommend on this page if you click our links and make a purchase. We try to keep the info on this site as up to date and fresh as possible, but cannot guarantee that this will always be the case.