But as we explain further up this article, Microsoft Defender has come on leaps and bounds and can now legitimately be mentioned in the same company as Bitdefender, Norton and Kaspersky. As well as very solid virus protection, Defender has extra bits and bobs like a ransomware shield, webcam protection, privacy tools and even basic parental controls and cloud backup.
And the best bit No need to download a thing, just find it in your menu and get protected straight away. Read more and see how to use: Microsoft Defender review.
The paid-for version of Kaspersky's Windows security software frequently tops charts of best virus prevention solutions and AV-TEST once again gave it full marks across the board in its latest round of testing.
As you would expect, Kaspersky Free is a scaled down version of the full program - a tool that we really like more on which below. The free version ditches additional features such as privacy protection and safe payment sandboxes to concentrate on powerful, no-frills and - most importantly - free protection for your PC. The result is a tremendously easy to use and navigate bit of software that does an effective job of keeping you protected from viruses. Using the nuts and bolts real-world scanning engine of the paid-for suite, Kaspersky Free is fiendishly hard for viruses and trojan horses to break down.
And we love that it doesn't constantly pester you with nudges to upgrade to the full version. But, ironically, we will just for a moment, because Kasperksy Anti-Virus isn't expensive to buy and yet affords much better protection to your PC or PCs. Review and where to download: Kaspersky Free. Marketing itself as "business-grade security", Sophos Home does a little more than most free antivirus software, and actually seems better suited to families.
You get standard virus protection and anti-malware protection, along with browser tools like anti-phishing and, most importantly, content control. Combined with central management of up to 10 PCs, this means you can effectively lock down your kids' browsing options. Although Sophos Home has always had desktop notifications, there was no premium version of the software for it to encourage an upgrade to. That changed in February with the launch of Sophos Home Premium. Review and where to download: Sophos Home.
Each entry in this list has been carefully chosen for its business features, such as remote installation and central management. The best business antivirus software will have enterprise-level protection against threats, but that doesn't mean they have to cost a lot of money, either. The price per installation can sometimes be cheaper than even our recommended best antivirus packages. Avast Business Antivirus Pro An excellent business antivirus suite, giving you various tools such as virus protection, Firewall, email protection, anti-spam and the ability to sandbox applications for complete security.
Avast Business Antivirus Pro as opposed to the standard Avast Business Antivirus also includes Sharepoint and Exchange protection, as well as a number of tools for your servers. Bitdefender products are loved by the independent testing labs, highly rated for malware detection, removal, performance and usability. Most of the features work automatically — anti-malware, firewall, web advisor, URL filtering — but you can also customise the product to control user actions. Symantec Endpoint Protection Symantec's first benefit is the company's Insight file reputation technology, an effective way to detect and block even the very latest undiscovered threats.
Other layers of protection include virus protection, behaviour monitoring, intrusion protection, a firewall, and the 'Power Eraser' to remove stubborn threats and repair your system. Avira Antivirus for Endpoint This is Avira's main small business product. It takes all the core features you'd expect — antivirus, baseline network protection, web filtering — and extends them with file server protection and optimisation, along with application whitelisting and blacklisting.
The desktop side of the package has all the usual quality Kaspersky modules — antivirus, antispam, a firewall, more — but the mobile security technologies are even more impressive.
Mike began his career as a lead software developer in the engineering world, where his creations were used by big-name companies from Rolls Royce to British Nuclear Fuels and British Aerospace. He now covers VPNs, antivirus and all things security for TechRadar, although he still has a secret love of quirky open-source and freeware apps which find brand new ways to solve common problems.
North America. If you're looking for the best possible protection for your online devices in , then you've come to the right place - we've tested all of the best antivirus providers out there to come up with a definitive list of the absolute greatest.
View Deal. Bitdefender Antivirus. Maximum devices covered: Stand out features: Safepay banking protection, privacy tools, multi-layered anti-ransomware, VPN. Reasons to avoid - Room for improvement on detection. Norton AntiVirus. Stand out features: Intelligent firewall, PC maintenance features, bundled backup tool with online storage.
Reasons to avoid - Mixed results from the testing labs. Kaspersky Anti-Virus. Stand out features: Highly configurable virus scans, anti-ransomware, drive-by cryptomining infection prevention. Reasons to avoid - Not a huge amount of features.
Trend Micro Antivirus. Reasons to avoid - Not as many features as key rivals. Avast One. Reasons to avoid - Not a huge upgrade from free version. Microsoft Defender. But it lacks protection from web threats and email threats.
It also lacks the improved PC cleanup feature for clearing out old files in the Pro version. Installation with Avira is easy, with no attempts to sneak in other software, and no requirement for creating an account. Plus, you only have to uninstall one application instead of the multiple uninstalls required with something like Kaspersky. Most antivirus suites use the same desktop interface as their pro versions. Instead, it offers a stripped-down antivirus program with minimal options instead of the full interface of Bitdefender Total Security.
You can click the System Scan button to initiate a scan, or you can drag-and-drop particular files in need of scanning. If you like, you can exclude certain files or folders to speed up scan times. It protects you against ransomware, Trojans, spyware, and other kinds of malware. You can even choose which ones to actively watch out for, and disable others though it's not recommended like dialers, jokes, adware, etc. Avira Free Security can also scan on a schedule, check files with any file extension or just the ones you manually choose from, disable the ability to stop active scans so that viruses can not stop the program from finding them , adjust the scanner's priority level, scan primary boot sectors, follow symbolic links to scan the actual files, search for rootkits before starting a scan, scan the Windows Registry, ignore files on network drives, automatically repair, rename, quarantine, delete, or ignore threats when they're found, use heuristic scanning, add files, folders, and processes to the ignore list, manage Windows Firewall settings, password protect the program's settings, block autorun on removable devices, and make the hosts file read-only.
This program offers more than just a very extensive antivirus application. It includes several other "layers" of security that will install automatically, and they might take a while to download since there are several. However, you don't have to use them, and they won't bother you unless you open them. These separate modules include a VPN that encrypts all your traffic up through the first MB each month ; password manager to securely store complex passwords; and software updater that identifies outdated programs and gives you the download links to update them.
In addition, Avira can speed up your computer and reduce boot time with its tune-up tool, help you find the best deals as you shop online, and warn you of malicious websites or software bundles before you download them with its SafeSearch add-on. These extra features can be annoying if you're strictly after an antivirus solution, but again, you don't have to use them; just keep them tucked away where they are, and you won't have to worry about them.
Avira Free Security is intended to run on computers with Windows 7 and newer; this includes Windows 11, 10, and 8. There's also Avira for macOS.
Adaware Antivirus installs in minutes, is light on system resources, and can be used in one of two ways. The first is in regular mode where it checks for threats as they happen, but the other lets you use it in addition to your primary antivirus program. What this so-called "second line of defense" does is disables real-time protection but still lets you use Adaware Antivirus to manually scan for existing threats.
This feature is helpful if your primary AV software doesn't seem to find malware that you know is infecting your computer. Whichever way you use it, Adaware Antivirus provides a defense against ransomware, spyware, viruses, and other forms of malicious software.
You can find those threats through a quick, full, or custom scan. Daily, weekly, and monthly scheduled scans are supported, and you can even run a scan to just check certain things, like only rootkits or just tracking cookies and boot sector viruses, for example. For real-time protection, you can toggle on or off the following options: scan archive files, scan email databases, deep scan that checks CHM files and executable files, smart scan that skips previously checked files, scan boot sectors, scan files as they move throughout the network, and skip scanning files that exceed a custom file size e.
Adware Antivirus definitely has its advantages but because there's also a non-free version you can upgrade to, many additional options are not supported.
For example, parental controls and advanced network, web, and email protection are only available in Adaware Antivirus Pro. The official list of compatible operating systems include Windows 10, Windows 8, and Windows 7. Avast is used by hundreds of millions of people and ranks high in nearly every "best list" of antivirus programs, and for good reason.
If you want a solid program that is sure to block new threats but is still easy enough to customize, you should consider using it. Avast Free Antivirus is similar to Avira; supplemental modules enhance the virus shield and provide additional services related to security and privacy.
The antivirus portion has lots of options you can change but it's still easy enough for anyone to use since there are information blurbs next to most items so you're not left wondering what will happen if you enable them. Plus, both definition and program updates are performed automatically a manual option is available, too , meaning you can install Avast and let it do its thing without worrying whether you're running the latest and greatest version.
Avast is customizable and lets you make changes to everything from whether to make a sound when threats are detected and how long notifications should remain on the screen, to the kinds of file extensions that should be scanned. Here are some more features supported in this program: scheduled scans, custom scans that can check only the memory, rootkits, auto-start programs, etc.
Before Avast is installed, you have the option to include over a dozen different tools: file, behavior, web, and mail shields; software updater, browser cleaner, rescue disk, Wi-Fi inspector, security and SafePrice browser extensions; password manager; junk file cleaner; and Game Mode.
Technically, if you only want the antimalware protection, you can install just the shields from the start of that list; the others are add-ons that aren't necessary but could be helpful at some point. For example, the software updater is a nice tool that will not only check for and report outdated software but also install the newer versions for you even in bulk.
Wi-Fi Inspector scans the network for devices that could be vulnerable to attacks. For instance, it might identify that a computer is running a file sharing service that has been known to facilitate the spread of a certain kind of worm. You can install these tools it takes less than five minutes and then disable or completely remove them later.
Or, you can ignore them during setup and just install them later, or not at all. And what if you can't afford to pay for antivirus software? One of the best free antivirus programs might be exactly what you need.
Free antivirus software used to be a step down from the paid software and involved trade-offs. The protection wasn't as good and you'd either have to put up with ads filling your screen or with constant nags to upgrade to a paid program. That's all changed. One of the best antivirus makers, Kaspersky, offers a free version with the same excellent malware protections as its paid offerings.
Its top rival, Bitdefender Antivirus Free Edition, has been officially discontinued, although Tom's Guide readers can still download it with this link. A merger between the biggest names in free antivirus, Avast and AVG, created a combined malware-detection engine that's much better than the sum of its parts.
Meanwhile, Microsoft's built-in antivirus software, Windows Defender, aka Microsoft Defender Antivirus, has gone from being a joke to being one of the best antivirus programs out there, free or paid.
You can now get free antivirus protection that's as good as anything you pay for. So here are the best free antivirus programs based on their protection, system impact, ease of use and extra features. Kaspersky Security Cloud Free 2. Bitdefender Antivirus Free Edition 3. Windows Defender Antivirus 4. Avast Free Antivirus 5. Kaspersky Security Cloud Free Antivirus may be the best free antivirus program we've ever seen.
It has excellent malware protection, a decent set of extra functions and features, and a system-performance impact so small that our computer actually sped up after we installed the program. Bitdefender Antivirus Free Edition has been officially discontinued, and we're not sure how long Tom's Guide readers can still download it. It's the best "set it and forget it" free antivirus option.
It's now one of the best antivirus programs altogether. You don't have to install or download it — it's already on your PC. If you want an unlimited password manager or a hardened web browser, Avast Free Antivirus might be for you.
Its malware protection is much better than it once was, although its performance impact is fairly heavy. Avast's stepsister AVG has the same malware-detection engine, but lacks Avast's full slate of useful extra features. But it does have a file shredder and system optimizer. We have to mention one program that's not antivirus software, but which we recommend anyway: Malwarebytes Free. While antivirus tries to stop malware from infecting your machine, Malwarebytes functions as the cleanup crew, sweeping out less-harmful adware or potentially unwanted programs that the antivirus software ignores.
It works well alongside any antivirus program. Kaspersky doesn't talk much about its free antivirus product, and you might have a hard time finding the free Kaspersky software download page on the company's website. That's too bad, because Kaspersky Security Cloud Free is the best free antivirus product we've ever tested. We've never seen such a combination of excellent protection and extra features in a free antivirus program. It's got a bright, comprehensible interface, a lot of customization potential and Kaspersky's unbeatable malware protection.
The program also lets you schedule scans, and its performance impact was so small that it actually sped up our test machine a bit. Kaspersky's useful extra features include a file shredder, an on-screen keyboard and an email scanner. The password manager and VPN service are fairly limited, however, unless you pay. Read our full Kaspersky Security Cloud Free review.
Bitdefender has officially discontinued Antivirus Free Edition, and it will be supported only until June 30, We still love it and you can still get it , but proceed at your own risk. Compared to premium paid antivirus programs that are big, heavy and loaded with extra bells and whistles, Bitdefender Antivirus Free Edition is like a '60's sports car, stripped to the essentials but still providing plenty of power.
Bitdefender Antivirus Free Edition offers nothing but the basics. There's no password manager, no gaming mode, no quick scans and no scan scheduling. You can manage the software from the program's System Tray icon, but you don't really need to interact with Bitdefender Antivirus Free Edition after its installation.
Yet Bitdefender Antivirus Free Edition has the excellent Bitdefender malware-detection engine, which sits just below Kaspersky and Norton in the lab-test rankings. It's the best free antivirus software if you want a security solution that you can set up and then forget about.
It's also perfect if you need to protect the computer of an elderly relative but don't have time to manage antivirus software from afar. Read our full Bitdefender Antivirus Free Edition review. Microsoft's built-in antivirus software is now a heavy hitter.
While Windows Defender, aka Microsoft Defender Antivirus, doesn't quite beat Norton or Kaspersky in malware-protection lab tests, it comes out ahead of Avast, AVG and most other free antivirus products while operating almost entirely behind the scenes.
You won't be getting many extra features with Windows Defender itself, yet Windows 10 does have parental controls, a gaming mode and protections for its own Edge and Internet Explorer browsers. There's no built-in VPN, but you also won't be bothered by pop-ups trying to upsell you to paid antivirus software.
As for a password manager, there's a stealth one built into the Microsoft Authenticator app for Android and iOS that syncs with the Edge browser, as long as you're signed into your Microsoft account on all devices. We still recommend going for Kaspersky Security Cloud Free, which has even less of a system impact, better malware protection and more useful extras, but there's absolutely nothing wrong with using Windows Defender as your primary antivirus solution.
Read our full Windows Defender review. Avast Free Antivirus has the best assortment of extra goodies of any free antivirus program, including a hardened browser, a gaming mode, a Wi-Fi network scanner and a recently added ransomware shield.
Unfortunately, the unlimited password manager has been discontinued. The program is also very customizable, letting you tweak its appearance and functions to suit your style.
It even offers limited access to Avast's VPN service. However, Avast Free Antivirus caused a pretty heavy system load in our testing and its scans took a long time. It also kept nagging us to upgrade to Avast's paid antivirus protection, and played bait-and-switch with features that looked like they were free but weren't. Most significant of all, the malware protection in Avast Free Antivirus is a peg down from Kaspersky's or Bitdefender's, whose free programs also bothered us less about paid upgrades and had lighter system loads.
Read our full Avast Free Antivirus review. AVG shares a decent, if unspectacular, malware-detection engine with its corporate sibling Avast while having a much lighter system-performance impact. While the latter is almost a free security suite with lots of bells and whistles, AVG AntiVirus Free is the quiet, neglected child that gets the hand-me-downs.
The good news is that AVG's wide range of customization options and its file shredder and system optimizer are still available, and its interface is open and easy to use. Worst of all, given its middling malware detection and dearth of extra features, there's no convincing reason to choose AVG AntiVirus Free over the built-in and overall better Microsoft Defender.
Malwarebytes Free, formerly called Malwarebytes Anti-Malware, is not antivirus software. Instead, it's a very useful malware-removal tool. What's the difference?
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