A good antivirus suit is must for a Windows operating system. Most normal home users do not want to put money to purchase a Antivirus software. Instead want to use any free security suit. There are few very good free antivirus software, so you do not need to use a paid security software. Below is list of some best free antivirus for Windows.
- Microsoft Security Essentials
Microsoft Security Essentials is a free antivirus suit that provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software. It is very simple to install, easy to use, and is automatically updated to protect your PC with the latest technology. Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.
Another good thing about Microsoft Security Essentials is that its very light. It is compatible with Windows XP SP2 and higher, Windows Vista, and Windows 7.
- Avast Free Antivirus
Avast Free Antivirus is another very good security suit for Windows. Its very light, effective, smooth and powerful. It has inbuilt Antivirus and anti-spyware engine to protect against viruses, spyware, and other malicious agents. It also has Real-time anti-rootkit protection, and many more.. - Panda Cloud Antivirus
Panda Cloud Antivirus – Free Edition is the first free cloud-based antivirus. This fast and light solution connects in real time to PandaLabs’ Collective Intelligence servers, protecting your computer from the latest malware variants. Thanks to the Collective Intelligence knowledge base, this antivirus detects more malware than other traditional solutions.
It is light, secure, and easy-to-use. It protects you while you surf the Web, or play and work online, and you won’t even notice it’s there. Thanks to its cloud-based scanning you’ll have maximum rapid protection against even the very latest viruses.
- Avira AntiVir Personal Free AntiVirus
Protects your computer against dangerous viruses, worms, Trojans and costly dialers. - Comodo Antivirus
All-in-One Protection From Every Source of Infection. Defense for email, browsing & shopping, IM, external devices, downloads, gaming etc.