5 Best Free Antivirus Software 2026
Compare the best free virus protection services
Protection for PC, Mac, Android, and iOS
Remove all Viruses, Trojans & Malware
Enhance & Speed Up All Your Devices
1
30 Day Money-Back Guarantee
- #1 Antivirus Provider 2026
- Real-Time Antivirus Protection for 3 Devices
- Removes Viruses, Adware & Malware
- Protect Your Identity and Online Purchases
- Includes Firewall and Advanced Ransomware Protection
Available on:
outstanding
2
- One of the most trusted around
- Compatible with all devices
- Perfect for home users
- Advanced Firewall included
3
- Includes Smartphone Antivirus
- Advanced Firewall included in all plans
- Compatible with all operating systems
- Perfect for home users
excellent
4
- Compatible with all devices
- Advanced Firewall included
- Removes Viruses, Adware, & Malware
- Spam & phishing e-mail blocker
Great
5
- One solution to protect your devices
- World-class virus and malware protection
- Includes Smart Firewall and Password Manager
- Darkweb Monitoring powered by LifeLock
#1 2025 Editor’s Pick
$100 OFF!
- #1 Antivirus Provider 2026
- Real-Time Antivirus Protection for 3 Devices
- Removes Viruses, Adware & Malware
- Protect Your Identity and Online Purchases
- Includes Firewall and Advanced Ransomware Protection
Available on:
2
- One of the most trusted around
- Compatible with all devices
- Perfect for home users
- Advanced Firewall included
3
- Includes Smartphone Antivirus
- Advanced Firewall included in all plans
- Compatible with all operating systems
- Perfect for home users
4
- Compatible with all devices
- Advanced Firewall included
- Removes Viruses, Adware, & Malware
- Spam & phishing e-mail blocker
5
- One solution to protect your devices
- World-class virus and malware protection
- Includes Smart Firewall and Password Manager
- Darkweb Monitoring powered by LifeLock
What is an Antivirus Software?
An antivirus is a software program designed to detect and remove malware from a computer or mobile device. Traditional antiviruses scan your files against a built-in malware database, flagging unsafe files that match the database. More advanced antivirus programs use machine learning, heuristic analysis, and cloud-based malware directories to detect and remove zero-day threats and very sophisticated malware. All of the best antiviruses offer real-time protection, so they scan every file before it executes to ensure malware never even starts running on your device.
Why do you need an Antivirus?
In recent years, people have become increasingly reliant on electronic devices. It is crucial now, more than ever, to have adequate security to protect your personal information from viruses and hackers. That’s where antivirus software comes in. Antivirus software, also known as anti-malware, is a computer program used to prevent, detect, and remove malicious software from your computers, tablets, and mobile devices.
There are many different types of malware, viruses being the most well-known. Here we have highlighted some of the lesser-known types of malware that all security-conscious users should be familiar with. To learn more, follow our blog for the latest updates and information.
Disclaimer
AntivirusAdviser’s reviews are the honest opinions of our team of expert cybersecurity professionals. Our reviews are neither paid for nor sponsored by antivirus providers, although we may earn an affiliate commission through some of our referral links.
At AntivirusAdviser, our goal is to provide transparent, informative, and easy-to-understand reviews of antivirus solutions for all devices and operating systems. We hope these reviews will give you the insights needed to make an informed decision about your antivirus purchase.