10 Best Antivirus Software 2021

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This website is a free online resource to help you make an informed decision when choosing an antivirus software. We receive advertising revenue from some antivirus software we featured to showcase their products.However, our reviews are not explicitly biased and the income we generate in this way does not specifically affect the service we bring to you, as our customer. Our reviews, and other exhibited content, are wholly original and produced by the site operator at its own discretion and does not imply endorsement.

Editor's Choice

Best antivirus of 2021, providing excellent antivirus protection.

  • Ranked No1 in 2020 AV-TEST industry testing scores

  • Multi-level virus protection and detection rate

  • Real-time Antivirus protection

  • Browser cleaner & manager

  • 100% eliminate cyber-threats

  • 30-day money back guarantee

9.9 /10
(4228 reviews)
$80 OFF Now Visit TOTALAV

High accuracy, low-impact antivirus with online backup capabilities.

  • One of the most well-known antivirus brands

  • 100% virus protection promise

  • Protect your PC, Mac or mobile devices

  • Best parental control features

  • Dark web monitoring

  • 60-day money-back guarantee

9.7 /10
(3923 reviews)
Visit Norton $59.99$19.99/year

Powerful security against numerous forms of online or offline dangers.

  • Prevent scam attempts from reaching you

  • Clean up and optimize your computer

  • Prevent and recover from identity theft

  • Protects your usernames and passwords

  • Award-winning detection features

9.3 /10
(3625 reviews)

Extremely light on CPU and quick scan.

  • Real-time security and updates

  • Great spam filter

  • Excellent ratings in Antiphishing

  • 24/7 live chat support

  • Parental control protects children

8.8 /10
(3523 reviews)

Award-winning antivirus, received 4.6/5 Trustscore on Trustpilot.

  • Real-Time Antivirus safety

  • Safety from phishing scams

  • System performance optimization

  • Does not hog resources or slow your down

  • One of the most accurate malware detector

8.5 /10
(3146 reviews)

Easy-to-use malware scanner with a high virus detection rate.

  • Real-time antivirus protection

  • Smartphone optimizer & protection

  • Safe password vault

8.2 /10
(3025 reviews)

Get comprehensive protection for both Mac and PC.

  • Non-Programmer friendly

  • Secure your web browsing

  • Protect devices from all kinds of threats

8.0 /10
(2864 reviews)

Powerful security against numerous forms of online or offline dangers.

  • Quick & easy installation

  • Proficiently handles huge data

  • Makes data stretchy and customizable

7.8 /10
(2560 reviews)

Protects against all online threats, including spoofed websites and ransomware.

  • Excellent protection for all devices

  • Exceptional user reviews

  • Shop and bank online safely on any device

7.5 /10
(2354 reviews)

Well-balanced security with powerful antivirus capabilities.

  • Good Anti-Virus and firewall ability

  • Remote management working well

  • Excellent Anti-Spyware and Anti-Phishing

7.3 /10
(2026 reviews)

All antivirus services on our list have been featured on:

How we test the best antivirus software

Our reviews were based on an antivirus product's interface, performance, protection, price and extra features. Was the interface intuitive and user-friendly? How badly did malware scans slow performance? How well did the program detect and remove malware? Does the program have any useful additional tools?

Most of our tests were performed on the same Asus X555LA laptop running 64-bit Windows 8.1 (later upgraded to Windows 10), with an Intel Core i3-4005U processor, 6GB of RAM and a 500GB hard drive containing 36GB of files.

Some of our newer performance tests were done on a Lenovo ThinkPad T470 with a 2.5GHz Core i5-7200U processor, 8GB of RAM and 256GB of solid-state storage containing 43.3GB of files.

To assess a program's impact on system speed on both Windows and macOS, we used our own custom tests, which measure how long a CPU takes to match 20,000 names and addresses on an OpenOffice or Excel spreadsheet. The longer it took the laptop to finish either test, the heavier the performance impact.

For malware-detection scores, we use the results of three independent testing labs: AV-TEST in Germany, AV-Comparatives in Austria and SE Labs in England. Each lab subjects the major antivirus brands' products to stress tests involving thousands of pieces of malware, including hundreds of previously unseen samples.



  • Why do you need antivirus software on your computer?

    Antivirus software is a tool that you can use to secure the data that you install in your computer system. We are going to describe some of the advantages of antivirus software. You can block direct access to malicious ads and ads that contain the virus to your computer network.

    Mostly, hackers use malware or a virus program to get access to their specific victim computer. Hackers can also install a virus or malware into their victim computers. They can do this by sending malicious emails to the victim. Antivirus software enables you to have a good defense against data thieves and hackers.

    Commonly we use some removable devices like USB to transfer data. After removing the USB or any other removable device, we notice that our computer has become slow. It is due to the removable device is used as a transmission device for the virus. Antivirus software also provides you safety from the removable devices.

  • How malware hurt your computer?
    • Steal your personal information: They can steal information including your password, client profiles, browser history, and more important data.
    • Slow your computer: Several types of malware also replicate themselves and fill up the hard drive of your computer, so there is little room left for legal programs.
    • Restrict access to your files: Some types of malware have the ability to hurt and delete your personal files and programs.
    • Spread throughout your network: Worms, another type of malware that is very disruptive for your businesses. If this type of malware infects a computer, it raises itself and has the ability to spread within the whole network.
    • Disrupt daily operations: Moreover, almost all types of malware have bad effects on any normal business in any form. Adware is also a type of malware that particularly irritates the productivity of the business. When it is installed on a computer, it facilitates regular popups.
  • Free or Paid Antivirus?

    Whether it’s better to install a free antivirus or invest in a paid version depends on the type of activities you perform on your device and other circumstances like - whether or not you have children using your computer. Most experts will urge you to get a paid version, but free versions are great for testing a product or trying out new features. However, in the long run, they will fail to provide substantial protection. Which might end up costing you more long-term.

  • Does Mac get viruses? Do I need a Mac cleaner?

    Can Mac devices get viruses? Its answer is not much straightforward as it gives the impression. Here we will discuss the risks that Mac consumers can face. We will also discuss the benefits and harms of using antivirus software for Mac.

    Macs have previously been considered secure and safe for several reasons, but that has changed significantly in recent years. In fact, as Malwarebytes said in its report on the malware state here, they saw one: "The overall occurrence of macro-risk spreads in 2019 increased by more than 400% from 2018".

    MailWerberts report state that there were six MAC threats to detect 25 endangered in 2019 and two of them were placed in the top 5. The malware number two threat on all platforms was Mac adware, which is familiar as the NewTab.

  • What is the difference between a Malware, Virus, and Spyware?

    1. Malware

    Malware is a program that particularly harms the host system of the device. It can also consist of other kinds of software like worms, Trojan horses and spyware, etc. Highly developed malware like ransomware is used to commit financial scams and extort money from computer users. Malware is most damaging to mobile devices and PCs. There are different kinds of malware like viruses, adware, worms, and ransomware, etc.

    2. Virus

    The virus itself is a particular kind of malware. It is a piece of infectious code that damages other programs on the host system and spreads itself on the go. Virus is generally familiar to spread when the program is shared between computer systems. It acts more similar to a parasite. Some viruses can harm your computer devices by removing the files, reformatting the hard drive and damaging other programs. Some of them simply duplicate themselves flood a network with traffic, making it not possible to make any internet activity.

    3. Spyware

    Spyware is also a type of malware that is familiar to access your device without your permission or knowledge and it can be very harmful for your device. It is an unwanted program that infiltrates your device. Hackers use it for several purposes. It can also steal your personal and internet usage data.

  • What is ransomware?

    Ransomware is a hateful software with one reason in mind: Extortion from its wounded. Today, it is the most criminalized business model of the world, demanding hundreds of millions of dollars in ransom from individuals and corporations. These demands are very simple: give the ransom, or strictly cooperate or completely blackout your operations. Frequently, an association first becomes alert of an attack when they are notified on the screen when they are notified that the figures on their network have been encrypted and access to pay the ransom. Will not. Just on payment, they will get a decryption key to access the statistics. The key may be removed as a result of a payment collapse, and the data is always available.

Top Picks for 2021

# 1
9.9 /10
(4228 reviews)

Best antivirus of 2021, providing excellent antivirus protection.

9.7 /10
(3923 reviews)

High accuracy, low-impact antivirus with online backup capabilities.

Visit Norton
9.3 /10
(3625 reviews)

Powerful security against numerous forms of online or offline dangers.

Visit McAfee