Bitdefender Free Antivirus 2025 Free Antivirus. Bitdefender antivirus free is a free antivirus software especially designed to protect your windows pc. Bitdefender antivirus free is a contender for the best free windows antivirus in 2025.

Its malware scanner is super lightweight (it’s based in the cloud) and offers flawless. But free antivirus software doesn’t come with all.