ESET, spol. s r.o., a Slovakian IT security company that produce one of the best antivirus solutions (NOD32) is now offering a free online web-browser based virus scanner + cleaner solution.
While the online scanner could identify and resolve threats, is not a resident antivirus unlike its desktop counterpart and therefore will NOT be able to protect you from threats 24×7.
The online scanner runs as an ActiveX control and therefore, will require Internet Explorer 5.0 and above running Microsoft Windows NT/98/ME/2000/XP and Vista.
i am only using free virus scanners like avast and avira but they seem to be great tools though;.~