"Avira is our pick for the best for Windows, and Sophos is our pick for the best for macOS when it comes to anti-virus, and MalwareBytes when it comes to anti-malware. If you prefer something else? We have more options. Bottom line, there’s absolutely no reason to pay for pricey antivirus or anti-malware subscriptions, and free tools—despite some sleazy practices from some of late—do the same job without the bloat and cruft that comes with big names you might recognize from office computers everywhere."
The information above comes from Lifehacker.com