Top 10 Best Antivirus Software Companies

I have done beta testing on antivirus suites for years.

For 2009, I found Kaspersky to be the best AGAIN.

I tested Kaspersky, Norton, Webroot, ESET, McAfee, and G-DATA.

I tested 200 different Malicious files.

Kaspersky detected 198 of those files with zero false positives.

Norton detected 198 of those files with zero false positives.

Webroot detected 195 with zero false positives.

(I'm only showing results from the top three.)

Real-time protection:
I went to infected websites and downloaded infected files, pictures, etc.

Out of 35:
Kaspersky detected 35.
Norton detected 33.
Webroot detected 35.

So, the best antivirus is:
1. Kaspersky
2. Norton
3. Webroot

Using this for ages now. It has an amazing layout which is really easy to find your way around, and it is easy to use overall. There are regular updates and it's easy to know when Kaspersky needs an update or has detected a virus, Trojan, etc. I have trusted Kaspersky ever since I got this computer (1/2 years ago) and have never been infected! Kaspersky will solve all of your problems easily, and I trust Kaspersky 100%!

I have been using Kaspersky Internet Security for almost 4 years now. I have had no problems since installing it on my PC. I never have to look for solutions because it makes every decision in a smart way. It updates itself, scans the system for infections, scans USBs attached to the computer system, and also checks for system vulnerabilities for possible security holes that have not been patched by updates from Microsoft itself. Its unique safe transaction technology was awarded by AV-Test.org for "Most Innovative Lab Work to Secure Transactions."

Kaspersky is absolutely one of the excellent antivirus product in the market. Protection is always top, and has great removal capability of malware from infected machines. System Watcher is monitoring system changes, roll-back unauthorized modifications if the system has compromised.

The only antivirus that shows the links are risky or not. Other you can know once you click but Norton does it before your click (on the search page itself). Same goes on android. It can scan apps on Google Play store which you are viewing even before clicking install.

Norton is the best antivirus, and it's from one of the most experienced antivirus companies. It has changed a lot now. It's not heavy on the system resources either. Just give it a try, and you won't want to change it for any other antivirus program ever.

Starts automatically when you start your PC, and you won't even know it. It always work in background providing info in notification (I know other can do it too, but NORTON does it better). Very nicely designed and doesn't use too much memory and detect every single malwares. It is the best.

This and McAfee are my favorite because they're simple and very accurate. McAfee and Norton are very good, so go with the one people like best, which is Norton. But if Norton's not available, McAfee is great too.

ESET saved us quickly. I actually enrolled in this site to give ESET some congrats. My wife unaware of the security I had set up with ESET for years, almost got horribly hacked by a smooth obviously professional scammer. When I came saw her on her computer one morning she had already let this company, charge her credit card and gain entry to her computer to "clear up" a problem.
One quick call to ESET, and they not only told us what to do immediately, they then got in our system and checked everything. Nothing but one issue had to be resolved with one company and one credit card. A small thing compared to what could have happened had things not been cleaned quickly. I cannot appreciate ESET enough. Worth every penny spent over the years. Very helpful with some other issues over the years. The entire family, desktop and laptops now and will always have ESET security systems.

ESET is the best antivirus yet. It is very fast and doesn't slow down your system, unlike Norton and Kaspersky.

I had Norton before, and it almost crashed my system despite the fact that my PC has good specs (2.1GHz dual-core HP Pavilion dv6). Now, I'm using ESET, and it's amazing. It provides daily updates to keep your system protected. Since I've had it, I don't know what a computer virus is. Believe me, I can comfortably surf the internet without any threat. I can even visit sites with high virus alerts without any system intrusion because I have ESET.

It's the best user-friendly antivirus available. It's very easy to operate and schedule your scans, system inspections, and other things.

I can't see myself giving up my ESET to have another antivirus. One can't condescend from the best to something lower. ESET is the best by a mile. Believe me.

Never had a problem with viruses when using eset. Runs well and doesn't slow the pc down and easy to change settings. Tried one of the newer Norton Av a few years ago and kept deleting a false positive when I told it not to. Kaspersky runs well as well but it is heavy on the resources.

Would say I would go for eset, bit defender and then Kaspersky. Otherwise avast is a good free Av if you don't want to pay.

I used to have Norton and Kaspersky many years ago. However, Norton was eating up my resources, and Kaspersky just turned into a program that constantly notified me about "nothing happened to you." Kaspersky is very good, but I find that Eset has fewer hardware requirements and I never get infected when I use it. Additionally, I find Eset cheaper, especially in the 3-year plan.

BitDefender is by far the most effective security suite for Windows on the market. These guys have a leading research team which, in many cases, is the first to identify newly formed malware. Their suites have an excellent, frequent definitions update implementation, coupled with a rock-solid detection engine that consumes little system resources. They also have an excellent firewall and privacy options.

The only good, free option is Microsoft's own Security Essentials. In fact, considering its effectiveness compared to other free alternatives, as well as its light footprint, it is very underrated.

As for others:
- Kaspersky is all-around good, but doesn't offer nearly as much value for the money. Also, their reliability has been waning as of recently.
- Norton is garbage which is plagued by inconsistent performance, as well as stability and software update issues. I've had numerous bad experiences with their products.

It knows what to do to keep you safe. There's no need to schedule updates or scans; it simply does auto-updates and auto-scans. It scans only when you're not using your laptop during your busy hours so it doesn't lag the system. It also knows when you're on battery or in gaming mode, and it automatically postpones any scans to avoid disturbing you. Simply install Bitdefender Free Edition and forget it's there because it makes your computer's life easy, as well as yours.

If you want a real opinion, you gotta ask experts who by the way will tell you that Bitdefender HAS TO be among top 3 if not 1.

This company is so underrated, just because it is not in headlines for spying allegations as Kaspersky or doesn't have a crazy John McAfee to do the marketing job by posting pictures with rifles or candidate himself for crazy people's presidency. Although, Donald Trump proved the latter is apparently not as crazy as it might sound.

BitDefender and McAfee are the only two I know on this list. McAfee is much more well-known, it seems. There, that's the reason it's higher! The Dell I use is old, so it makes a few of the available versions of McAfee crash. Though honestly, BitDefender! It runs as fast as a supercomputer on my 1998 Dell Computer System! Also, it seems as if it knows that some things I've downloaded aren't viruses.

I have used AVG for years. The free version works very well; however, the paid version is worth every penny! Norton and McAfee are both jokes. AVG's free version works much better than their software that you have to pay for. The paid version is only $39.99 and can be picked up at Walmart and other stores. But if you're looking to protect more than one computer, go to AVG/Grisoft's website for a better deal. Try it! You will not go back to those other companies again, EVER!

I've used several other antivirus on this list for personal and corporate use (150 PCs, 14 servers). One was way too heavy, expensive, and had bad habits of not staying updated, another was heavy, expensive, and didn't work (come to find out it really isn't that good unless you install the whole suite, and we wanted only antivirus). AVG Business Ed. It's simple, light, and awesome. The fact that they have a free personal edition is icing on the cake.

I've been using it for years. Although it does have a few false positives, I've never been infected with a true virus while using the free version of AVG. It has caught plenty of them and kept my PC safe. The only downside I've seen for others is that once in a while there's a file from AVG that messes up the boot process. I've been able to fix it most of the time, but there were a couple of instances where I had to reinstall Windows (XP). Still, it's the best I've seen compared to the other free ones.

Norton slows down my computer, plus it's not free!

AVG has been working wonderfully for the past year that I've had it. I'd definitely vote for AVG.

It never bothers me and it takes care of all the problems. No annoying updates, and it keeps me virus-free without slowing down my computer.

It doesn't even take up that much space.

I solved problems with malware and trojans that Webroot, AVG, and Symantec (Norton) could not. Norton is not worth the price, as three antiviruses failed to identify and remove the problem. McAfee, on the other hand, installed updates and identified trojans and malware during the first scan, successfully removing them all. While it can be a pricey software, it is worth the money if all else fails. If I start using Windows again (currently using Linux), I will get McAfee (usually receive a year free with bank accounts) and see how good it is once more. However, Linux does not require antivirus software, as viruses and trojans in .exe form do not install except on VM software (on Linux), which can be completely deleted because the root cannot be infected. There is no need to perform scans that can take hours with a deep scan on terabytes of data.

McAfee is the best antivirus company. Not necessarily the retail/consumer locked version, but I mean the commercial version that almost every company uses as their vendor now. The commercial version (VSE 8.8 and higher) is as simple and refined as antivirus gets. It has a perpetual license, it has OAS consistently running when you choose, and everything is just completely customizable. It's like the Android of the antivirus/malware world. Once you have the .zip file, it can go on an unlimited number of PCs. It's the best antivirus commercially available. It's so good that I've been able to run it on a crashing PC whose only hope is a reformat, and it's been able to remove about 90% of issues.

I have always used it, as opposed to Norton, and its "Total Protection" and "Site Advisor" products have kept me safe for a number of years now. A couple of Trojan Horses have crept past the firewall now and again, but the antivirus has picked them up and quarantined them for me. All in all, I have found McAfee to be a good, well-rounded product. Keep up the good work!

The best antivirus ever, still working awesome even in an outdated state. It's very easy to use and can be updated with just one click. It has super real-time protection that can detect every single infected file, even in standby mode.

McAfee also offers the best firewall software. Using both of them will provide ultimate protection.

It has many components that keep you safe. It also offer vpn along with the other components to increase protection. If you get a virus avira fixes it without a technical remote; but if all fails its customer people will always help you with the toll free telephone number. It always has good grades with the testing labs.

I have been using it for the last 4 years, and it's simple and active. It provides good heuristic protection and is not too heavy. Unlike other antivirus software, it doesn't slow down your system. You can download offline virus VDF files for free, and I have never had any problems with it. Previously, I had Norton, which heavily burdened my system. Give it a try for complete protection against viruses.

This is the ultimate antivirus. It's free, powerful, and when you download something with a virus, the program just deletes it. When you enter a page with a virus, the program automatically closes your browser. It's just brilliant.

Simply the best. Second only to Kaspersky. Norton has long been outclassed by Avira. Whether it's the free version or the premium version, Avira offers excellent protection with minimal requirements.

Number 1 antivirus software ever! My PC became full of viruses almost a year ago. I tried Norton, Kaspersky, ESET, and many more, but no hope. They couldn't fix my computer. I thought my PC would be damaged. Finally, I bought Avast! Incredible! I started its first scan, and it detected so many viruses. It began destroying all the viruses, and a few hours later, my PC looked like new! So please buy Avast! Premium antivirus to detect and destroy problems like viruses, malware, spyware, hacking, online threats, CD viruses, and many more.

Avast has 7 screens, heuristics, a sandbox, and receives multiple updates daily. I love this antivirus because it has a detection rate of approximately 98% in the "PC security" review 2013 test (Avast vs. Bitdefender). The test used 500 viruses, and Bitdefender scored 98.6%, while Avast scored 98.2%.

Best security that I have used. It's fast and efficient and offers loads of services plus offers a secure browser. Should at least be in the top 5. 10/10 stars!

The best free customer service I've ever received. Super high quality antivirus and lifetime warranty. Simple amazing.

Quick Heal must be among the top five. I installed this antivirus five months ago, and since then, I have forgotten about computer viruses and malware. It has its unique DNA scan technology, which can detect ANY virus on this earth. You also get daily automatic updates if you have an internet connection. If not, you can download the update files through its website from anywhere, like cyber cafes. It gives your computer total protection against viruses and is light for your system.

I noticed that Symantec, Norton, and McAfee had some limitations at my workplace. Then I sought the opinions of various people, including those from the IT sector, some colleagues from the IS department, and my nephew. I discussed with them the internet and computer usage and ultimately concluded that Quick Heal Total Security was the best and easily available option. I have been using it for the past five years and have not encountered any problems. It not only provides total protection for your computer but also for your cellphone. It is truly good.

You can entrust your system's security concerns to Quick Heal Total Security, which can handle everything, leaving you with no regrets.

11 years and still counting, Quick Heal, the best antivirus, has been my computer's friend since then. I remember 2002, the year when I lost all my research work on the study I was doing. Being a professional, I can understand the pain and anguish I had in my mind. Somebody told me that if you had Quick Heal security solution on your computer, then the virus attack would not occur. The next thing I did before bringing a new computer was buying Quick Heal, and I have been using it since then. I have had many computers since 2002, but the only antivirus software I install is Quick Heal. Thanks to Quick Heal for creating this wonderful software, and to the people who work for Quick Heal, give yourselves a pat on your back for doing what is right. My vote is for Quick Heal.

N More, Mumbai

Quick Heal detects all the viruses where others fail to detect or provide a solution after detection, including top brands. The best part is that they give onsite support from the company whenever required, and a solution is given for new viruses within 24 hours. Easy deployment/maintenance with a graphical dashboard is a gift to administrators for defining policies, generating reports, controlling the network, etc. That's great from our Indian Company to be better than the best. Last but not least, the system speed is not hampered. Kudos to Quick Heal for their quality of product and excellent post-sales support. In short, they provide customer delight. MH - Hyderabad.

I am, among other things, a retired PC repairman, and over the years, I have used several different antivirus programs. Most of them either slow my computer down and/or block internet sites deemed Malicious, and yet the viruses still manage to sneak in! For the past three years, I have been exclusively using "Malwarebytes" Anti-Malware, which is supposedly not an antivirus program. I have never had a virus/malware problem since then! I didn't have a firewall either. Although a couple of viruses managed to get in over the three years, I simply scanned my system with Malwarebytes, and within seconds, the problem was solved! Moreover, "Malwarebytes" stays out of the way!

This should be in the top place on antivirus companies. I mean, this isn't even an antivirus company, but if you have this on your computer, you don't need an antivirus. Unlike the antiviruses, this software is lightweight. So, vote for Malwarebytes!

Best anti-malware program. Only $25 for the PRO version. Much better than Norton and fully customizable to run completely in the background. I've been malware-free ever since installing this suite, and I download a lot of random torrents.

Top of the line, super fast service, and deadly.. It actually DETECTS them! I have used several over the years, none come up to the powerful standards set by this software.