Microsoft Security Essentials is a free antivirus software for your PC.This freeware protects your computer against malwares, spywares and viruses through real time protection.Avast Free Antivirus includes a Dyna Gen-powered intelligent antivirus. You can fix various problems without uninstalling previous antivirus. It has Anti-malware Protection plus anti-spyware & anti-rootkit too.It Protects your PC against the latest viruses and spywares.It has a smart scanning technology that reduces scan times.
Herd Protect is a free online malware scanner for your computer.It is connected to Panda Lab’s online collective intelligence servers in real-time.This freeware is specially developed and designed to protect your computer against the latest malware, spyware and viruses. It lets you offer quick and custom scan for specific drives, files and folder.It will check various parts of the system such as browser plug-ins and add-ons, system services and drivers, currently running processes, startup programs and applications and boot sector of the hard disk.Vir Cleaner is a free tool for removal of virus from your PC.Zone Alarm Free Antivirus Plus Firewall is a free antivirus cum firewall software for your computer.