The Emsisoft Emergency Kit portable is a very powerful and handy free scanner to bring with you on a USB stick or thumb drive. It can be used to detect and remove trojans, spyware, adware, worms, dialers, keyloggers, and other malign programs. This tool comes with features such as a-squared free, command line scanner, anti-malware, anti-dialer, HiJackFree, and Mamutu.
AVG Rescue CD (for USB Sticks) is a portable version of AVG Anti-Virus supplied through Linux distribution. Created by AVG, the USB flash drive version offers a stand alone bootable AntiVirus, AntiSpyware, and System Recovery Solution. The AVG Rescue USB enables you to scan for and fully remove infections.
AVZ AntiViral Toolkit is a portable anti-malware and anti-spyware utility developed by Oleg Zaytsev. Designed to detect and remove adware, spyware, network worms, trojan horses (Trojan, TrojanDownloader, TrojanSpy), and dialers, AVZ also implements specialized algorithms to detect keyloggers, block rootkits, and scan for suspicious system activity. Although originally a standalone toolkit, Oleg later joined Kaspersky, and some of AVZ’s technology is now integrated into Kaspersky products.
CWShredder is a portable anti-spyware tool from Trend Micro designed to target the CoolWebSearch (CWS) family of spyware. CWS infections are notorious browser hijackers that can change your homepage, add unwanted bookmarks, create desktop shortcuts, slow down your PC, and even cause system instability. CWShredder is a free and portable solution that you can carry on a USB drive to remove CoolWebSearch infections quickly and efficiently.
a-squared HiJackFree, now called Emergency Kit is a Malware Scanner and informative system analysis tool that advanced users and administrators can use to help detect and then remove all types of Malware; HiJackers, Spyware, Adware, Trojans and Worms. It can be used to manage autoruns, processes and associated modules, control Browser Plugins, and view all DNS entries.
Dr.Web CureIt is a free portable antivirus software tool that can be used to quickly scan a computer for viruses and other malware. The DrWeb standalone security utility helps detect and remove many common threats including worms, email viruses, file infectors, stealth viruses, polymorphic viruses, keyloggers, dialers, adware, hack tools, backdoors, and trojans.