Best Antivirus Software List for 2021 [Free Download]

What Is Antivirus Software? How It's Work? Why We Choose It?

Technology has changed the thinking of humans. It started its journey with the invention of the computer. The computer was the first-ever innovative appliance. It then evolved itself to many steps. Moreover, one of its important parts nowadays is the antivirus software. Antivirus security is applications used in a programmed computer.

As technologies progress, the software of all appliances is programmed to an upgraded level. Each of this upgraded software represents the advancements of the appliance. These applications are a part of the foundation of PC. Moreover, developers have created antivirus software to protect us from all kinds of malware.

To know different types of software introduced till now, we also have to know what Antivirus Software is.

What Is An Antivirus Software?    What Is Antivirus Software

An antivirus program works explicitly to remove malware from computers.

Moreover, the software controls all the instructions, data, and overall work of computers. Now, preventing malware, removing, and detecting is done by antivirus software. As the name suggested it is mainly used to remove any kind of computer virus.

A modern antivirus program can protect the computers from BOHS that are browser-help objects. Moreover, it even detects worms, malicious LSPs, adware, spyware, and many more. Notably, antivirus software can now detect threats from other computers.

Antivirus Security Applications List:

Let us look at a few of the acclaimed antivirus software. To know which software is good for your computer, you should take some consideration before doing so. The best antivirus security list is shown below:-

  1. Bitdefender
  2. Norton
  3. McAfee
  4. Panda

Antivirus Software Free Download:

Downloading options are always available on many websites. These websites can provide various scopes to download the software. Following are some of the sites for free antivirus downloading options:

  1. Microsoft Defender Antivirus.
  2. Kaspersky Security Cloud Free.
  3. AVG Free Antivirus.
  4. Avast Free Antivirus.
  5. Avira Free Antivirus.
  6. Panda Free Antivirus.

Antivirus Software Best for Windows 10:

In general, almost all the new computers are now running with windows 10 processors. Likewise, it is tough to find the best antivirus application for the PC. Antivirus can be classified depending upon the PC. Antivirus can be complex in the case of any processor.

  1. Kaspersky Anti-Virus.
  2. Bitdefender Antivirus Plus.
  3. Norton Antivirus Plus.
  4. ESET NOD32 Antivirus.
  5. McAfee Antivirus Plus.
  6. Trend Micro Antivirus+ Security.

What Is The Difference Between Malware and a Virus?

Generally, various programs and sites can be harmful to computers. This can perform wrongly. It can cause damage to different applications and various performances. These defects are even dangerous to remove and recover.

Likewise, a human virus can attack the host body to replicate itself inside and cause diseases. As such as that way viruses and malware can replicate destructively inside the computer by changing its codes.


This software can attack the computer to attack various applications. Moreover, this is a harmful agent which can maliciously destroy computer applications and functions. Different types of malware can attack computer software. Following are the different methods to perform attacks on computers.


Generally, the computer virus is a metaphor derived from the human virus. This virus can attack inside the computer. Through the replication process, it can change the codes of certain software. Generally, the affected areas of the computers are said to be infected areas. This can be in a form of worms and many more. Likewise, these are specially designed to infect the computer and steal data information.

How to Choose an Antivirus Service for Business?

Yes, your business requires antivirus protection. Windows 10 has its own built-in protections. One can add additional protection by adding antivirus software.

Keeping your business operations safe and malware-free in the modern era isn’t easy, especially when there are security risks left and right. Hackers are constantly devising new clever ways to carry out stealing sensitive data, as a result damaging your company’s order.

Indeed, the logical method to deal with these risks is to get an antivirus for your business. Avast is very good antivirus software for businesses.

Best antiviruses software 2021 [Update]

Following the best antivirus software for 2021 and free downloads:-

1. Avira:

for the free security of computers, it is the software. This is one of the best antivirus solutions. This antivirus can find out some hidden malware too. Moreover, the work of creating Avira was started,  in 1986 and was founded in 2006. To clarify, this is a German multinational computer security software company. By all means, the founder of this software is Tjark Auerbach in Tettnang, Germany. Particularly, the headquarter is in Tettnang, Germany. The current CEO is Travis Witteveen.

Why We Choose It:

Based on many users’ experiences, Avira is a compatible software. It is fully compatible with Windows, Mac, and mobile systems, generally IOS and Android. It is easy and reliable and is very useful for searching for malware, network security issues, and many more. Moreover, it scans privacy weaknesses and device performance concerns.


  1. Avira is strong enough to remove malware. Furthermore, it helps to resist future attacks.
  2. It is having a strong scanning speed. It is very fast and unusual.
  3. However, its spam defending is great.
  4. Avira is fast while detecting attacks and viruses.
  5. likewise, it works smoothly in the background. It doesn’t create any load on the computer.
  6. It’s an effective software with a solid firewall.
  7. It doesn’t require whole system reasoning to function.
  8. The performance of Avira is very powerful.


  1. Avira’s price is the highest among many antiviruses software.
  2. Many of the users reported that their customer survival is dull. They do not have much knowledge about their products.
  3. There are no frequent updates to this software.
  4. The interface process is hard for beginners. It needs to be more user-friendly.
  5. The system doesn’t have any block options for pop-ups and advertisements.

2. McAfee:

McAfee was formally known as McAfee Associates. Indeed, it is an American global computer security software. The main offices are in San Jose, CA. This company is a part of the intel security division. McAfee primarily develops digital security for cell phone devices. It is also an antivirus that is defending malware systems for computers.

Why We Choose It?

Likewise, McAfee is an antivirus software providing a scanning system for the computer. It detects malware and virus and tries to find the threat and destroy it. Likewise, other software is also a popular antivirus system used by people all around the world to protect their computers from malware.


  1. McAfee’s detection level of threats is better than other antivirus software.
  2. It has a regular update option and an updated version.
  3. Visibility of threats is quick in McAfee which helps in curing easily.
  4. It is vivid with all other applications.
  5. It has a strong detection engine to detect malware.
  6. Deployment is fast and easy.


  1. This software may sometimes need to train staff to run it.
  2. It slows down the client a little bit.
  3. Sometimes additional software is needed.
  4. the updates require licensed and installed applications.
  5. Requires a lot of memory and CPU utilization.
  6. It freezes the screen while process and detecting the virus.
  7. This antivirus is not applicable for more advanced malware systems.
  8. McAfee is not able to detect the zero-day as it is signature-based.

3. Kaspersky:

Kaspersky anti-virus is a software developed by Kaspersky Lab. It is primarily developed for Microsoft Windows and macOS. Moreover, there is separate software for Linux computers. This was initially released in 1997. The operating systems now are Microsoft Windows, macOS, Linux, Android, and IOS and are licensed by Freemium. It is safe and has a minimum impact on system performance.

Why We Choose It?

Kaspersky is good anti-virus software. It also helps to perform better in computer malware detection. In fact, it is much better than the McAfee antivirus when compared to which many of the users support Kaspersky more.


  1. This software is incredibly easy to use.
  2. It has a very effective and powerful scanning power.
  3. Its licensing cost is also very reasonable comparing to other antivirus software.
  4. Kaspersky behaves like a real-time system for monitoring threats deeply.
  5. It has an easy deployment.
  6. External applications can be used by users.
  7. This software is accurate and very fast in screening antivirus.


  1. The integration is not always straightforward.
  2. For the IT experts, the IOS integration is complicated.
  3. Sometimes the clients fail to update in computers for few days.
  4. Kaspersky is not available with a DLP solution.

4. Avast:

Avast anti-virus security is also a great security software for computers. It’s a cross-platform antivirus security software. It’s for Microsoft Windows, macOS, Android, and IOS. Both paid and free version is available. This also provides computer security, browser security, anti-virus program, firewall, anti-phishing, antispyware, and anti-spam among other services.

Why We Choose It?

It is one of the excellent forms of security. Moreover, comparing to other software this provides the best antivirus program. This can even operate a networking scanner.


  1. It is a safe tool and provides real-time security.
  2. It works smoothly in the background.
  3. Moreover, and provides a smooth scanning without any hang.
  4. Its scan lies in its interface which is quite clear.
  5. It decreases the chance of spy attacks.
  6. Its subscription charges are quite fair.


  1. Avast is quite heavy on storage.
  2. It sometimes results in removing of personal important files.
  3. Not so effective in the advanced form of attacks.
  4. Its installation is quite slow.
  5. Notification is quite frustrating.
  6. Its price is high.

5. Bitdefender:

Bitdefender is one of the Romanian branches of security. It is also one of the best antiviruses securities. This helps in the detection of threats in computers. Moreover, its headquarters are in Bucharest, Romania. And also established in Europe, America, Australia, and the middle east. The company was founded in 2001 by the current CEO and main shareholder, Florin Types. It saves 60% of cyber-security.

Why We Choose It?

It is one of the best software markets in 2021. Likewise, provides huge internet security. It also helps in the protection of malware. Furthermore, provides many additional features. Likewise, such additional features are not present in other software.


  1. It is decent anti-virus software.
  2. There are no system impacts.
  3. Free trails for available plans.
  4. It offers a reliable VPN.
  5. It is easy to use and straightforward.
  6. Protects both home users and businesses.


  1. It is very expensive.
  2. Not much impressive as the third-party leaders.

6. Emsisoft:

It’s a New Zeeland-based anti-virus software. They are notable for decrypting ransomware attacks to restore data. This is also known as Ems iSOFT anti-malware. There is a total of three types of Emsisoft.  Anti-Malware Home, Business Security, and Enterprise Security. This is also effective software. It was founded in 2003 and the founder is Christian Mairoll.

Why We Choose It?

This is routinely used in virus detections. like the other software, this is also good software. The users of this software enjoy a good comparison.


  1. Excellent score in our malware protection test.
  2. Behavioral detection successfully blocked ransomware.
  3. The management console allows full remote management.
  4. Browser-independent blocking of dangerous sites.


  1. No scores from independent labs.
  2. Poor protection against dangerous and fraudulent websites in testing.

7. F-Secure:

Its headquarters are in Finland. Moreover, it comprises 30 offices around the world. Likewise, it’s a cyber-security managing system for computers. It’s one of the global cyber-securities. This is an award-winning detection software.

Why We Choose It?

It is a good software and did well on the international ratings. It provides good banking protection. Parental controls are also been dealt with well by F-Secure. A unique Finder Android/iPhone smartphone locator function to its mid-range SAFE plan.


  1. This is one of the simple anti-virus software
  2. Do not require any fancy applications.
  3. Real-time protection.
  4. It comes with good browser protection.


Like zero play production doesn’t require any next-gen protection.
The management interface is difficult to use.
Real-time interface and firewall sometimes interfere.

8. Malwarebytes:

This is one of the American global anti-virus software. Likewise, it protects home computers, cellphones, and many more. In general, also protects many threats and companies too. Moreover, it has offices in Santa Clara, California, Clearwater, Florida, Tallinn, Estonia, and Cork, Ireland. Likewise, It is licensed in proprietary freemium. It is also available in 30 different languages.  It was founded on January 21, 2008.

Why We Choose It?

Malwarebytes is safe antivirus protection. It is having a decent antivirus scanner. Offers a good deal of protection. Full-time protection is also provided for which the customers usually byes it.


  1. Malwarebytes will warn you if a website does not look safe.
  2. Very effective at detecting and blocking threats.
  3. Stays up to date with the latest threats.
  4. Web protection.
  5. Threat preventions.


  1. There are fewer features in the trial version.
  2. Sometimes quick scans fail to detect important files.
  3. They also miss real-time protection.

9. Norton:

This is one of the parts of the Norton family developed by NortonLifeLock. Licensed by commercial property software. It is an anti-virus and anti-malware. It requires signatures to identify viruses. Other features included in it are e-mail spam filtering and phishing protection. It was released in February 1991.

Why We Choose It?

In an overall sense, Norton is good in all applications. Insecurity, protection, and many more. But the price of Norton is a bit higher than the McAfee.


  1. Norton works quickly in processing.
  2. It is efficient enough to detect threats.
  3. Is very easy and simple to install.
  4. It is without any complications and irrelevant inquiries.
  5. Norton is available at a very reasonable price in the market.
  6. It is not heavy on pocket.


  1. The interface of this is not users friendly.
  2. A bit difficult for beginners.
  3. Sometimes it takes much time to scan the whole system.

10. Avg:

This is an anti-virus software developed by AVG technologies. Which is a group of Avast. It is available for Windows, macOS, and Android. Licensed by freemium. Founded in 1999.

Why We Choose It?

AVG has produced many good results in ratings. It has also seller products more than some of its compactors’. That’s why most of its reviews are quite well.


  1. The notification feature is so good.
  2. The prize is incredibly affordable.
  3. It’s proactive and detects malware of all other kinds of viruses.
  4. It can scan fast.


  1. The interface needs more improvement.
  2. Scanning sometimes takes a long time to proceed.
  3. Its customer service is non-responsive.


Is free security software any good?

Free anti-virus solutions will protect you against known computer viruses. However, they may leave you vulnerable to yet unknown threats. If you choose Kaspersky Free Anti-virus for Windows, you will benefit from the same antivirus as our paid products

Does Windows 10 have its own virus protection?

Yes, Windows 10 includes Windows Security and It provides the latest antivirus protection.

Do I need an antivirus for Windows 10?

Whether you recently upgraded to Windows 10, well, technically, no Microsoft has Windows Defender, a legitimate antivirus protection plan already built into Windows 10.

Do I need antivirus program?

Yes, you may need one according to the malware function of your computer.


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