No Virus Thanks is a similar service that supports 20 different antivirus engines (Virus Total supports 42). The most important engines on the other hand are supported like those from Kaspersky, F-Prot, Trend Micro, Dr. Web, Panda or AVG. The limitations are also similar. Files up to a size of 20 Megabytes can be uploaded directly on the No Virus Thanks website.

The No Virus Thanks Uploader can be installed to send files directly from the Windows operating system to the online service. The tool limits the size of the files that can be uploaded to 5 Megabytes. It is not really clear why the developers have made the decision to reduce the allowed file size. Files larger than 5 Megabytes need to be uploaded manually on the website.

The uploader displays a file browser, the running processes, Registry startups and options to search old files, display the list of drivers and loaded dlls; all of which can be uploaded to No Virus Thanks for the antivirus check. (The drivers list and loaded dlls tab did not display results on our Windows 7 64-bit bit operating system).

The No Virus Thanks Uploader contains a downloader as well that can be used to scan remote files with the antivirus scanner.

No Virus Thanks is a viable alternative to Virus Total that comes in handy if the Virus Total service is busy or unreachable.

The file upload limit of No Virus Thanks is 20 Megabytes which means that it is not possible to upload files larger than that. The site has a rather low queue of 30 items and displays the current queue number in the upload form. It usually does not take long to process an upload though. The status is shown after uploading the file to the online virus scanner.

The report contains a detailed analysis of the uploaded file including results of each antivirus engine that has been used to scan the file. One interesting option of the online virus scanner is the option to paste a MD5 hash into a form on the website. This can reduce the time before a result will be displayed if the file has already been uploaded and analyzed by another user of the service.

You can also check the article about online virus scanners that lists several websites that will scan the computer with one antivirus engine usually provided by the software developer of antivirus software.