Cnet Best Free Antivirus 2025. Our pick for the best antivirus software overall is bitdefender total security, which can handle advanced security threats with ease and without draining your cpu's. Avast one essential has ascended to the top of the list as the very best free antivirus of 2025, and that’s for one key reason:

You’ve come to the wrong place if you’re looking for free antivirus—our list here includes the best antivirus software. Detects and removes malware, spyware, and viruses.