VirusTotal is a virus and malware online scan service.
VirusTotal uses up to 41 different antivirus products. Files can be sent either through the website or via email. The variety of products used by the website allows a user to check for viruses that the user's own antivirus solution may have missed, or to verify against false positives.
The drawback to using VirusTotal is that it can only scan submitted files, and cannot perform system-wide scans on the user's computer. Another restriction users would face is that the size of the file uploaded or emailed to virustotal for scanning is up to 20 MB.
VirusTotal is not available for Windows Portable (click here to submit it!)
VirusTotal is not available for Handheld
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