When you use an antivirus software make sure it is the best one around. None of the antivirus can scan and find 100% of the viruses yet some best antivirus software’s can at least find more than 95% of the viruses. There are limitations that some antivirus software find some of the viruses that the other’s wont find. Moreover we cant use more than one antivirus software at a time too (due to security and performance issues). So the best way to ensure a file is completely virus free is to do an online scan. Online scanning engines are made up to date and can scan and find out viruses which our antivirus can’t. Online scan for viruses scans the files with multiple popular antivirus software’s engines, so it is far more superior than what is done by a single antivirus software.
1. Virus Total Online Virus Scanner
Currently VirusTotal is the best online service to scan for viruses online Free. VirusTotal website supports most of the languages too.
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2.Virus Chief Online virus Scanner
It is the second best solution to scan for virus online. VirusChief uses the scanning engines of Avira (AntiVir), Avast! Antivirus, AVG Antivirus, Clam Antivirus, Virus Buster, Bit Defender etc. Since in VirusTotal it will take some times to finish the scanning (due to high work load on their server) you can prefer viruschief if time is a very important factor to you. Scan Now
BitDefender Online Virus Scanner will scan your entire PC including the Memory, Boot Sectors etc. It will also help you to clean those virus infected files automatically. Bit Defender too have very good virus detection rates.
McAfee was an award winning antivirus solution. McAfee is the most widely used antivirus software for business solutions. McAfee virus scan engine will check the files on your system and give you elaborate reports of the infected files.
Kaspersky Antivirus has gained popularity due to its exceptionally high virus detection rates and protection. Currently Kaspersky Antivirus is the Best Available Antivirus Protection in the Market.7. F-Secure Online Scanner
Microsoft haven’t forgot to give a security solution to their customers. They presented it as the Windows Live OneCare. Windows Live OneCare actually didn’t stand up well in the battle of the fierce battle of Top Antivirus Software’s. But it is not bad too. Windows Live OneCare also provides the option to remove the virus infected files easily. It also have some additional tools for cleaning up your PC. 
Eset Nod32 have become popular recently due to their good protection and performance gain over other similar products. Like other antivirus programs ESET Nod32 wont slow down your PC yet it gives good protection too.ESET Online Scanner uses your web browser to scan your PC and help you to malwares from your PC safely. ESET Nod32 Antivirus Online Scanner uses the same ThreatSense® technology and the latest ESET NOD32 Antivirus definition files.
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10. Panda AntiVirus
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