Antivirus

Norton's Windows antivirus products offer very good malware protection and extra privacy software, but lack some basic security features.

Kaspersky's 2019 Windows antivirus software offers great protection, a moderate system hit and many extra features with the pricier products.

ESET's antivirus software has a remarkably light system impact, but its malware protection is average.

CM Security Master looks great and has a rich slate of features, but its malware protection can vary.

Kaspersky Free Antivirus delivers excellent protection with a moderate performance impact, but it has few extra features.

Bitdefender Antivirus Free Edition continues to be the best set-it-and-forget option among free antivirus products.

Panda Free Antivirus looks good and is easy to use, but its malware protection is unreliable.

Avast Free Antivirus offers lots of extra features, but its malware protection is mediocre and it may collect your browsing history.

Simple, straightforward and with decent malware protection, Windows Defender is a no-muss, no-fuss way to protect Windows computers.

Avira Free Antivirus has a heavy system load while providing only so-so malware protection.

AVG AntiVirus Free is light on its feet and easy to use, but it has mediocre malware protection, few extra features and some privacy concerns.

PSafe DFNDR is feature-rich and easy to use, but its malware protection is inconsistent and the free version has too many ads.

Lookout Security & Antivirus works well, looks great and has several unique features, but we don't know how well it defends against malware.

Avast Mobile Security has solid malware protection, but some of its many features don't work well.

Norton Mobile Security may seem pricey, but its excellent protection, multidevice license and unique privacy features make it a worthwhile investment.

Bitdefender Mobile Security isn't free, but its excellent malware protection and ease of use make it well worth paying for.

Avira may not charge for its Mac protection, but other free options provide better malware detection, system impact and design.

Sophos Home is best for those looking to keep a fleet of Macs safe and sound for free.

Kaspersky Internet Security for Mac offers very good malware protection with a rich assortment of useful extra features.

Bitdefender Antivirus for Mac offers high-caliber protection with little system impact and a great design, making it our top Mac antivirus pick.

Avast offers top-tier protection and scans email for free, but it can slow system performance.

Norton Security Deluxe offers excellent malware protection for Macs, but it costs too much to not include special features.

McAfee AntiVirus Plus for Mac's unlimited license package makes it an appealing option for families.

The free AVG AntiVirus for Mac's fantastic malware detection and design make it a solid option.

Kaspersky Internet Security for Android has excellent malware detection and anti-theft, but a clunky interface and few extra features.

ESET Mobile Security offers very good malware protection, but too many of its essential features are premium-only.

BullGuard Antivirus is fairly easy to use and offers lots of customization options, but its malware protection is only so-so.

ESET NOD32 Antivirus has a clean, easy-to-use interface and a light system load. Too bad its malware protection is average at best.

F-Secure Anti-Virus offers excellent malware protection at a bargain price, but it has a heavy system load and a high false-positive rate.