In this article, you can find some good tools to remove virus or secure your computer.
You can find more on this link : http://delete-virus.us/tag/tools/
AdwCleaner is a free tool to remove PUPs & Adwares.
Malwarebytes Anti-Malware is a security program.
With the Free version of Malwarebytes Anti-Malware, you can remove virus from your computer.
Hitman Pro is an other security programs.
With the free version, you can remove all the threats for free.
Roguekiller is a free tool to remove Trojan, Backdoor and Rootkits.