Zillya! Antivirus includes a fully installed antivirus with all the needed features.

InfBlocker PRO Shield Protects computer against virus coming from removable drives - RCPsoft.net.

The most important feature of Wise Anti Malware is real-time protection, which is considered as the first guard to defend your PC against Malware threads. It has three shields, Malware detection, Adware detection, and Registry protection.

AntiSpy is a free but powerful anti virus and rootkits toolkit.It offers you the ability with the highest privileges that can detect,analyze and restore various kernel modifications and hooks.

[NOTE: This online scanner works only on Windows OS.]

You can use ActiveScan (by Panda Security) to make sure that your PC is free from all types of threats.

ActiveScan detects all types of:

Viruses, Trojans, worms. Spyware. Jokes. Dialers. Hacking Tools.

Infected with a virus? Unsure whether your existing antivirus software has detected and removed it? Still having problems and unsure where to turn to next? Sophos Virus Removal Tool can help.

NANO AntiVirus is a powerful and advanced application designed to provide you with security levels that conform to actual threats.

Free malware remover for Windows. Easily detect and remove popular trojans, spyware and rogue security software from your computer. Easy to use interface.

We at Malwarebytes realize this is becoming a more prevalent issue, and have created a free application to help keep you safe and secure - RogueRemover FREE