It can be difficult to find an antivirus that works well for an affordable price. Yearly subscription antivirus programs are the norm but not the only options out there. We have compiled a list of some of the best FREE antivirus programs to keep your computer safe from threats and proactively protect your devices without the yearly cost.
“Total AV’s full system scan will locate, quarantine and eliminate malware, Trojans, adware, spyware & more ensuring you are protected against all the latest viruses and threats.”  Total AV includes speed optimization functionalities, disc cleaner, and compatibility across all devices making it an excellent option for those always on the move.
“Sophos Home protects every Mac and PC in your home from malware, viruses, ransomware, and inappropriate websites. It uses the same award-winning technology that IT professionals trust to protect their businesses. Best of all, you can manage security settings for the whole family—whether they’re down the hall or across the world.” 
PC Protect enables you to protect your whole family by securing multiple devices with their unique cross compatible application. Includes an advanced firewall, real-time security, anti virus scan, and a system booster to optimize your computer’s boot time, control apps, and stop unnecessary processes.