Bitdefender Free
Pro: Top-tier scanning engine, extremely lightweight, no ads.
Con: Few extra features.
- Advanced Threat Defense
- Web Protection & Anti-Phishing
- Customizable Scans
Avast Free Antivirus
Pro: Real-time protection, Wi-Fi Inspector, many options.
Con: Some pop-ups for upgrade.
- Ransomware Protection
- Smart Scan
- Do Not Disturb Mode
AVG AntiVirus FREE
Pro: Reliable scan engine, email protection.
Con: Initial scans can be slow.
- Real-time protection
- Blocks unsafe attachments
- File Shredder
Avira Free Security
Pro: Full suite with VPN (500MB/month) and cleaning tools.
Con: Slightly higher system impact than average.
- Cloud Protection
- Free VPN (limited)
- PC Cleaner
Malwarebytes Free
Pro: Excellent for malware removal, complementary to other AVs.
Con: No real-time protection (scan only).
- Deep scanning
- Adware and PUP removal
- Lightweight and fast
Microsoft Defender
Pro: Built into Windows, free, lightweight and non-invasive.
Con: Fewer advanced features than dedicated suites.
- Real-time protection
- Integrated Firewall
- Parental Controls
Panda Free Antivirus
Pro: Cloud-based, very light, includes a free VPN.
Con: VPN is limited to 150MB/day.
- Real-time cloud scanning
- USB protection
- Rescue Kit
Kaspersky Security Cloud Free
Pro: Powerful antivirus engine, clean interface.
Con: Lacks many features of the paid version.
- Core malware protection
- Web protection
- Email scanning
AntivirusTools.net
External Resource
A collection of the best free security tools for Windows: cleaners, optimizers, and much more to keep your PC in top shape.