Installable Malware Scanners
Malwarebytes / Chameleon Version Highly effective antimalware scanner that focuses on threats which antivirus suites tend to miss.
SuperAntiSpyware One of my favourites, similar to Malwarebytes in function.
Eset Desktop Scanner The only free way to scan a system using the legendary ESET malware signatures.
Kaspersky Virus Removal Tool Takes longer than average to scan a system but not much malware can hide from it.
EMCO Malware Destroyer highly configurable and useful malware scanner.
Hitman Pro / 64-Bit The worlds only cloud based scanner which uses multiple antivirus engines. Hold down the left 'Control' key on the keyboard then run program to use the Force Breach mode (kills all unknown processes).
Trend Micro HouseCall / 64-Bit Browser independent online malware scanner. Takes a while to finish scanning but still very useful.
Sophos Virus Removal Tool Scans all hard drives for malware. Not configurable. Tool must be redownloaded to keep it up to date.
Emsisoft Emergency Kit Not much malware escapes this tool, commandline version included.
SuperAntiSpyware Portable The single file portable version of SuperAntiSpyware.
MalAware Does not remove malware, instead it provides a fast way of checking if a system is infected.
Dr.Web CureIt! No other scanner is more effective at cleaning what it detects.
Microsoft Safety Scanner / 64-Bit Useful malware scanner which rarely gives false positives. Expires after 10 days and must be re-downloaded.
F-Secure Easy Clean Best used to double check if a systems clean. Not configuarable.
Norton Power Eraser Uses advanced heuristics. Has a high amount of false positives, use with caution.
Vipre Rescue Command-line utility that is best used when other tools fail to run.
McAfee Stinger Standalone utility used to detect and remove specific malware.
Panda ActiveScan Cleaner The portable version of Panda Security's online scanner.
EXE Blocker Bypass Tools
RKill / Alternate Link Attempts to terminate known malware processes so that normal security software can then run and clean your computer of infections.
RogueKiller Similar to RKill in that it attempts to kill all known malware processes which stop other programs from running, also checks the registry for hijacked values.
KillEmAll Works differently from the above 2 tools. KillEmAll kills ALL processes good or bad leaving only the essential Microsoft Windows processes to run. After using this tool, press 'Control Alt Delete' on the keyboard to open Task Manager, then click 'File'>'New Task', then enter 'explorer.exe', press 'OK' and you should now have your desktop environment back, now run your preffered antimalware tool.
EXE Fixer Contains 4 files in a ZIP folder. Run each one until 'exe' values are returned to default settings.
Expert Tools (Portable)
Autoruns Lists every executable which starts during the bootup process.
Process Explorer Lists and handles all running processes.
Process Monitor Monitoring tool that shows real-time file system, registry and process/thread activity.
TCPView Lists all TCP and UDP endpoints.
Emsisoft HiJackFree Manages and lists running processes and startup locations.
Runscanner Lists running programs, autostart locations, drivers, services and hijack points.
HijackThis Generates an in-depth report of registry and file settings from your computer.
Eset SysInspector / 64-Bit Captures details such as running processes, registry content, startup items and network connections.
GMER Detects and removes rootkits.
GMER MBR Checker Checks the Master Boot Record for rootkits.
MbrAnalyser This tool able to read and analyze the Master Boot Record (MBR).
TDSSKiller Highly effective rootkit detector and remover.
Avast Rootkit Checker Powerful rootkit cleaner. Also does an optional scan using full Avast definitions.
Comodo Cleaning Essentials / 64-Bit Powerful 'all in one' utility designed to help users identify and remove malware and unsafe processes. Hold the SHIFT key before running CCE to force the utility to run should malware be blocking normal execution of CCE.
AntiMalware Boot Disks
Avira AntiVir Rescue System Has a very fast scan speed. Avira's boot disk is updated several times a day so it will have the latest definitions built in to the download.
Kaspersky Rescue Disk Has a slow scan speed. Very thorough boot disk with a wide variety of useful utilities built-in such as the Windows Unlocker Tool (open the terminal and type in 'windowsunlocker' and press ENTER, this will scan the host system's registry and remove any ransomware). Also has a registry editor.
Dr.Web LiveCD Probably the best boot disk when it comes to healing infected Windows files. It will have the latest definitions incorporated into the ISO upon downloading.
BitDefender Rescue CD Feature packed boot disk. Malware definitions are updated every few months but it does have a built-in updater which works best on a LAN connection and not WIFI (depends on driver support).
Microsoft Standalone System Sweeper / 64-Bit Downloads a little utility which creates the ISO file. The utility will add the latest definitions to the ISO. Has a decent scan speed and low false positive rate.
Hirens Boot CD Loaded with countless utilities. Most portable Windows software can be run from this boot disk.
Reverse Malware Damage
Regain Access To Hosts File Run this file to regain access to the hosts file should malware be blocking it.
Re-Enable Portable Repairs left over damage caused by malware.
Complete Internet Repair Attempts to repair everything internet related, including networking problems.
System File Checker Boot Mode Link Scans the integrity of all protected Windows system files and replaces corrupted, changed/modified, or damaged versions with the correct versions if possible.
Microsoft Fix it Find automated solutions for your Windows issues.
Unhide Files Reverses damage received from certain malware which hide desktop files, start menu shortcuts etc.
Crisis Aversion Tool A tool that aides in computer repairs. With a large collection of commonly needed windows fixes.
All In One Windows Repair Repair tool to help fix a large majority of known Windows problems.
FixWin Repairs and fixes common Windows annoyances/issues.
Unhide Makes your data visible as well as restore your missing Start Menu shortcuts and Windows Desktop items.
Toolbar Cleaner Removes many unwanted toolbars, apps, add-ons, plug-ins and browser helper objects.
Online Malware Analysis
Comodo Instant Malware Analysis Checks a file by running it in a sandbox and then reports the bevaviour of a file to see if acts like malware, takes less than a minute.
Anubis File Analysis Upload your executable file and Anubis will create a very detailed report of how the executable behaves.
Avira File Submission Upload a file and fill in the form, you will then receive an email once a file analysis expert (human) has checked the file indicating whether or not malware was detected.
Dr.Web File Submission Same as above but the file is checked by experts from Dr.Web.
VirusTotal Upload a file to VirusTotal and it will scan it with around 40 different antivirus engines. You will then be able to see how many antivirus engines classed your file as malware (or not).
URLVoid Scans a website address with multiple web reputation engines to facilitate the detection of possible dangerous websites.
Other Useful Tools (Portable)
Simtech Network Diagnostics Portable Very useful utility for troubleshooting network related issues.
AIDA64 Portable (Extreme Edition) My Favourite Windows utility, all in one diagnostic and benchmarking software.
SoftPerfect Network Scanner This program pings computers, scans for listening TCP/UDP ports and displays which types of resources are shared on the network (including system and hidden).
AppRemover Portable This utility enables the thorough uninstallation of security applications should the default uninstall fail or not do a good enough job.
IObit Uninstaller Portable The only free and portable uninstaller which works on 32-Bit or 64-Bit systems.
Open Hardware Monitor Monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer.
CCleaner Portable / Single EXE The most popular and trusted tool available for cleaning your PC
Speccy Portable / Single EXE Speccy is an advanced System Information tool for your PC.
Coming soon (contact me if you have any suggestions)
CrystalDiskInfo Portable Single EXE version of the popular disk health checking tool, can also check the health of external drives.