Online Malware Scanners
Online virus and spyware scanners can help you to check your system for possible malware infections if your current anti-malware applications fail to detect any threats. An online malware scanner normally does not clash with your current security software and is installed as a plug-in for your browser, so there is no need to un-install or disable your current anti-malware software. Many of these scanners only work in Internet Explorer, but Firefox users can install the IETab Add-on to run those scanners in Firefox as well. Below is a collection of free online malware scanners.
BitDefender Online Scanner
BitDefender Online Scanner is a fully functional anti-virus product. It features all required elements for thorough anti-virus scanning and effective cleaning: it scans your system's memory, all files, folders and drives' boot sectors, providing you with the option to automatically clean the infected files.
Ewido Online Scanner
With the help of Ewido's online scanner you can scan and clean your computer from malware without having to install additional software on your computer.
F-Secure Online Virus Scanner
F-Secure Online Virus Scanner is a free service. Use it to find out if your computer is infected and disinfect your computer if needed.
Kaspersky Online Virus Scanner
Kaspersky Lab's free online virus scanner is a great way to find out if you have any viruses or spyware on your machine without having to uninstall your current anti-virus software or install a new one. Most importantly, you can see what viruses your current anti-virus software let slip through.
McAfee FreeScan
McAfee FreeScan helps you detect thousands of viruses on your computer. Based on the award-winning McAfee VirusScan engine, FreeScan searches for viruses, including the latest known "in the wild" viruses, and displays a detailed list of any infected files. Should viruses be found, FreeScan even provides links to more information about the viruses and what you can do to clean your system.
Panda ActiveScan with TruPrevent
Free online anti-virus to combat viruses, spyware and other Internet threats.
Trend Micro HouseCall
Trend MicroTM HouseCall is an application for checking whether your computer has been infected by viruses, spyware, or other malware. HouseCall performs additional security checks to identify and fix vulnerabilities to prevent re-infection.
