Free Virus removal tool to detect and remove specific viruses from your computer

Virus removal tools are not a substitute for full anti-virus protection, but rather a tool to remove a particular virus (malware, spyware, rootkit, etc) from your computer. This is especially useful, for example if you're running other antivirus software but still suspect your computer is infected, you can download and use any of these virus removal tools for free.
If you suspect that your computer is infected by a virus and your security software is not able detect and remove it, just scan your computer using any of these free online scanners (see my previous post), then remove using any of the free tools described below.
(Lists are provided in alphabetical order)
1. Avast Virus and worm removal tool
2. AVG Free virus removal tool
3. Bitdefender virus removal tool.
4. Eset (Nod 32) offers free antivirus and spyware removal tool.
5. F-Secure Virus removal tool - provides a number of free virus removal tools
6. Kaspersky Lab has developed free virus removal tools
7. McAfee Stinger – stand-alone utility used to detect and remove specific viruses.
8. Microsoft Malware removal tool
9. Norman Malware Cleaner is able to clean an infected system completely
10. Sophos's anti-virus solutions can remove virus infections
11. Symantec now offers a free Spyware & Virus Removal service.