# Best Free Antivirus Software in 2026

Source: https://listme.name/best/antivirus-software/free

Antivirus software ranges from built-in protection to paid suites and open-source engines. This ranking weighs what each product covers first, then free-version access, platform reach and the extra tools bundled with it.

## 1. Bitdefender (score 90.5)

A free Antivirus version and paid suites that cover five devices per account, with VPN and identity tools bundled. Its many product tiers make the right plan harder to pick.

- Best for: Multi-device protection with a free starter
- Free plan, paid upgrades | Windows, macOS, Android, iOS
- Website: https://www.bitdefender.com/
- Page: https://listme.name/software/bitdefender

## 2. Microsoft Defender Antivirus (score 89.0)

Built into Windows Security at no extra cost and needs no setup. It covers Windows only, and tools such as a VPN come from third-party suites like the ones in this list.

- Best for: Windows PCs that need no extra software
- Free | Windows
- Website: https://www.microsoft.com/en-us/windows/comprehensive-security
- Page: https://listme.name/software/microsoft-defender

## 3. Malwarebytes (score 87.0)

A free malware scanner and device cleaners, with paid Premium Security for ongoing protection, a VPN and a browser guard. It covers PCs, Macs, Android and iPhone with a 60-day money-back guarantee.

- Best for: Free malware scans and paid ongoing protection
- Free plan, paid upgrades | Windows, macOS, Android, iOS
- Website: https://www.malwarebytes.com/
- Page: https://listme.name/software/malwarebytes

## 4. Avira (score 80.0)

Free Avira Free Security for Windows, with paid Prime plans that include Prime Mobile apps for iOS and Android. The free download is listed for Windows only.

- Best for: Free Windows antivirus with paid mobile plans
- Free plan, paid upgrades | Windows, macOS, Android, iOS
- Website: https://www.avira.com/
- Page: https://listme.name/software/avira

## 5. ClamAV (score 78.5)

An open-source GPL-2.0 antivirus engine for Windows, macOS and Linux, suited to administrators, mail gateways and developers. It has no interface of its own and is not a consumer app.

- Best for: Open-source scanning for servers and mail
- Free and open source | Windows, macOS, Linux | open source (GPL-2.0)
- Website: https://www.clamav.net/
- Page: https://listme.name/software/clamav