But Adaware underperformed in my general malware tests, failing to catch a lot of advanced ransomware and cryptojacker files that the other brands on this list successfully detected. Adaware provides a variety of additional features. Its Digital Lock feature is pretty good — it can encrypt, password protect, and permanently delete sensitive files.
Adaware is a decent anti-spyware program that also offers good file encryption and protection tools. Download Adaware Now. The free version only performs on-demand scanning. SpywareBlaster is a good anti-spyware app for browsers that specializes in blocking ActiveX malware. ActiveX is a tool that provides interactive website content.
ActiveX controls can be useful — they allow you to play media and fill in forms on websites. But hackers can also use ActiveX controls to gain access to your system. Once inside your system, hackers can install keylogging software, steal your private files, and access your webcam.
SpywareBlaster offers both free and paid versions. The paid version, SpywareBlaster Autoupdate , provides automatic updating, multi-user coverage, and technical support. SpywareBlaster blocks spyware that hijacks your computer via ActiveX website content.
Download SpywareBlaster Now. Spybot — Search and Destroy uses active scanning to prevent spyware and other types of malware from making changes on your computer. And it can also perform full spyware scans of your system. However, Spybot does contain some advanced features to protect your device from spyware and adware, including:. Spybot can erase usage tracks that document the files you opened, the applications you launched, and the websites you visited. By removing usage data from system files, Spybot gives users another layer of protection from hackers.
Spybot — Search and Destroy Free comes with anti-spyware tools, the rootkit scan, and the cookies and plugins blocker. Upgrading to one of the paid plans like Spybot — Search and Destroy Professional adds antivirus protection and real-time scanning.
Spybot — Search and Destroy is a surprisingly good anti-spyware and anti-malware app. Spybot offers free and paid plans, as well as bulk deals for enterprise users. Download Spybot — Search and Destroy Now. Spyware is any malware file designed to steal user data. Some spyware applications are, at most, annoying — they will insert unwanted search results or websites into your browser window, or passively send your metadata to advertisers. 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? Unlike antivirus software, Malwarebytes Free can't prevent a PC from being infected.
But it does an excellent job of cleaning out malware that's already on your system, as well as removing legal adware and potentially unwanted programs that antivirus software often ignores.
Malwarebytes Free doesn't interfere with any antivirus software that's already installed, so it's perfectly safe to install it alongside one of our recommended brands.
Just don't upgrade to the paid Malwarebytes Premium, true antivirus software that does poorly in lab tests and which will conflict with other AV programs. We recommend Malwarebytes Free as a complement to any of the best antivirus programs, free or paid. Read our full Malwarebytes Free review. Before you buy antivirus protection, figure out what you need. If you have young children at home, then consider midrange antivirus products, most of which include parental controls.
Do you want an all-encompassing security solution? Or are you a techie who understands and the risks of using the internet? Then a low-priced basic program might be all you need. MORE: How to buy antivirus software. Once you've got your priorities figured out, then determine how many machines you'll need to protect. Most vendors offer single-device licenses for Windows PCs. But multi-device, multi-platform licenses for five, 10 or more computers and mobile devices are available in midrange and premium antivirus packages, covering Windows, macOS, Android, iOS and sometimes even Linux.
Some vendors offer plans that cover an unlimited number of devices. Gone are the days when you could walk into a store and pay a one-time fee for an antivirus product that came in a box off a shelf. All the vendors now sell their software licenses as yearly or multiyear subscriptions. The upside is that you'll always get the latest software, which you can download and install straight from the internet. Many antivirus products are sold online for much less than their list prices. But each brand offers basic, midrange and premium configurations of features and pricing, with every step up adding more features.
Think of autos at a dealership. You can get a base-model car that will get you from place to place just fine. For a few grand more, you can buy a car with satellite radio, but no heated side-view mirrors, alloy wheels or in-car Wi-Fi hotspot. Or you can spend a lot more to get a loaded car with all the fixin's. Antivirus makers also hope you'll spring for extra options, whether you need them or not. The one thing you can't trade up to is a bigger engine: All the Windows antivirus products in a given brand's lineup will use the same malware-detection engine and provide the same level of essential protection.
The software will have essential malware protection and maybe a password manager or a two-way firewall. They generally add parental controls, some of which are very good, plus a few other features such as webcam protection. They often include multi-device licenses and antivirus software for Mac and Android devices. At the top are the premium "security suites," which toss in all the extra security tools an antivirus brand can offer, such as password managers, VPN client software, backup software, online storage and even identity-protection services.
The password managers are often quite good, but the online storage can be paltry and the VPN services often don't give you unlimited data.
Or at the other end of the scale, maybe you have a large family with a ton of devices to protect, and you need a package to cater for that. Or maybe you want a VPN service as well as antivirus, so a bundled package will save you a lot of money on subscription fees. In short, our recommendations are here as firm guidance, but modify these appropriately based on your individual requirements. For more thoughts on this, check out our article exploring how to choose the best antivirus.
The good news is that the best antivirus products are getting cheaper and cheaper to purchase, and free products are getting more and more effective A good free antivirus — like the ones we recommend on this page below — is a perfectly reasonable option for protecting your PC, with Microsoft Defender now the best we've ever seen it.
That said, premium antivirus programs offer extra features above and beyond the fundamentals. A robust system of parental controls could be a huge win for those with kids, for example. Or a dedicated anti-ransomware layer of protection that only comes with the paid-for product could help catch one of the most dreaded infections and halt it in its tracks. For more on this, read our full piece on whether free antivirus is enough to protect you.
Or just keep scrolling as we reveal today's best free antivirus software providers Paying for a premium service means you get more features like spam filters, parental controls, system scans and advanced firewalls.
This makes them more suitable for power users, those who want a bit of extra security and anyone who needs their system to run as smoothly as possible. It also means you avoid annoying pop-ups that try and tempt you to upgrade to the full version. In fact, these days you can get top quality protection absolutely free, with just about every single major vendor out there offering a free antivirus. Avira Free Antivirus is today's best free security download If you're determined to get free antivirus, we strongly suggest that you go for our pick of best security downloads - Avira Free Antivirus.
We've highlighted its long list of features below, together with information on how well it performs at independent testing labs. A very impressive freebie. That's pretty good for a freebie, and why we have no qualms at all in naming it as our 1 best free antivirus download. As well as the essential security smarts, we also love the clean, friendly interface and the fact it has a track record of throwing up minimal false positives.
In fact, the list of features reads more like a fully paid premium package. It throws in identity protection, a password manager, anti-scam protection to prevent phishing attempts, and even a PC cleaner to keep your system spick and span.
If there's one thing we'd change then it's the tad overeager badgering - although popups and advertisements are very common to free products, and that doesn;t prevent us from wholeheartedly recommending Avira Free Antivirus.
Review and where to download: Avira Free Antivirus. Avast and AVG haven't yet fully merged, despite the former formally acquiring the latter in mid The newly combined company says the two free antivirus products will remain separate, although there's apparently a joint AV package on the way soon.
Obviously, though, Avast now has a lot more data to work with, having expanded its effective userbase and, therefore, its threat detection network to a whopping million users.
The latest edition of Avast's free antivirus - now branded Avast One Essential - adds an automatic gaming mode to mute popups and reduce system load when you're firing up a processor-hungry game, which is very handy indeed, and the interface has been given a clean new overhaul. There's a password manager, too, which is an undeniably good addition to your security portfolio. It scores well on AV-TEST's widespread malware benchmark and continues a clean sweep against 0-day attacks — presumably that expanded detection network is really helping.
Less impressive is the slight negative effect Avast has on software launch times, and its slightly popup-heavy attitude. Review and where to download: Avast Free Antivirus.
Microsoft Defender formerly Windows Defender was generally seen as a bit of a joke in the not-too-distant past. It performed terribly by most measures and was a good advert for why you should really pay for antivirus.
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.
It can also offer ransomware protection and monitor unexpected behavior that may be a sign of new and not-yet-identified viruses and malware. You want antivirus software that can successfully identify these unknown online threats without flagging too many false positives.
Light on system resources. You don't want antivirus software that taxes your PC's resources. If after you install the program, websites open slowly, apps download or open sluggishly or file copies take longer than expected, you may want to try another service.
The good news is, all our picks offer a free trial to let you try out the antivirus program, so if your system feels sluggish after installation, you may want to keep looking. Cost and discounts. Don't just pay the sticker price for antivirus protection. Before you buy, check for discounts on a company's website. Another way to save: The prices we list above are for 10 devices -- if the company offered that package -- but you can trim your cost with antivirus packages if you need to cover three or five devices.
You may also find discounts on an app's Amazon page. To be effective, antivirus software needs to monitor what's going on with your PC, check in with company servers about unusual behavior and should provide sound banking protection. The companies say they anonymize this technical data as much as possible to protect your privacy.
But if you want to know more, the security companies on our list post privacy policies on their websites, so read their privacy statements to learn what the companies do with the information you share. Protection for other platforms. Microsoft is by far the biggest target for viruses and malware. While the Mac does come under attack via side-loaded apps, it's rare, and if you download apps only from the Mac and iOS app stores and keep your guard up when clicking links and download files, you should be OK without an antivirus app on Apple devices.
CNET editors pick the products and services we write about. When you buy through our links, we may get a commission. Best free Windows antivirus Microsoft Defender.
Jump to details. See at Microsoft. See at NortonLifeLock. See at Bitdefender. Best on-demand Windows malware removal Malwarebytes. See at Malwarebytes. Solid subscription antivirus alternative McAfee Total Protection. See at McAfee. Another good subscription option Trend Micro Maximum Security. See at Trend Micro. See at ESET.
Alternative free Windows antivirus Sophos Home.
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