ComboFix is a program, created by sUBs, that scans your computer for known malware, and when found, attempts to clean these infections automatically. In addition to being able to remove a large amount of the most common and current malware, ComboFix also displays a report that can be used by trained helpers to remove malware that is not automatically removed by the program.

Vba32 AntiRootkit is an advanced Rootkit scanner from VirusBlockAda.  This free scanner will search for kernel-mode rootkits, suspicious autoruns, and hidden processes.  VBA AntiRootkit is an advanced tool as it does not perform an automatic scan and removal.  Instead it displays any possible issues, which you will then have to decide how to act upon.

McAfee Labs Rootkit Remover is a free stand-alone product that scans your computer for Rootkits and attempts to remove them.  This version of Rootkit Remover is limited as it only detected and removes the ZeroAccess and TDSS family of rootkits.

Panda Anti-Rootkit is a free rootkit scanner from Panda Security. This program will scan your computer for Rootkits and attempt to remove them.

The Sophos Virus Removal Tool is a stand-alone program that allows you to perform a quick scan of your computer for computer viruses.  If any infections are found it will attempt to remove them for free. As this program only scans your computer and remove any infections it finds, it can be used even if you have another anti-virus product installed.

Trend Micro RootkitBuster is a program that will scan your computer for Rootkits.  This scanner will scan for rootkits that are using the latest technology including Master Boot Record (MBR) infections.

RootRepeal is a rootkit scanner thatRootRepeal is a rootkit scanner that scans for kernel-mode drivers, whether they are hidden, or if the driver file is hidden on disk.  It also has the ability to look for hidden files, hidden process, SSDT hooks, hidden services, and stealth objects.

RootkitRevealer is a rootkit scanner from Microsoft Sysinternals.  This program will search for user-mode or kernel-mode rootkits and list any API discrepancies that are found.

FixExec is a program that is designed to fix executable file associations for the .bat, .exe, and .com file extensions. If the program detects any of these associations are missing, changed, or hijacked, the settings will be set back to the original Windows defaults. When file associations for batch, executable, or COM files are changed it could cause your executables to no longer start. If you are looking for FixNCR.reg, this file replaces FixNCR with greater functionality.

RKill is a program that was developed at BleepingComputer.com that attempts to terminate known malware processes so that your normal security software can then run and clean your computer of infections. When RKill runs it will kill malware processes and then removes incorrect executable associations and fixes policies that stop us from using certain tools. When finished it will display a log file that shows the processes that were terminated while the program was running.