These are some of the most powerful and popular spyware removers which are widely available. All of them are completely free for download from their official websites and for personal use.
Advanced Spyware Remover (ASR): This software from Evonsoft protects your system against and removes numerous malwares such as stealthy spyware, aggressive adware, system hijackers, tracking cookies, keyloggers, dialers, etc. It also scans and lists the contents of key areas of the Registry and System. The new version even includes a Quarantine Manager. Available for download free of cost at www.evonsoft.com/download.htm/
STOPzilla (http://www.stopzilla.com/): STOPzilla is very powerful in protecting against phishing and ID Theft. It features Real-Time Spyware and Adware protection, Integrated Cookie and History cleaning, Integrated Home Page Hijacker protection and a Popup protection. The ZILLAsmart technology automatically checks for updates on a daily basis, and support is free 24/7 via live chat, email or a toll free number.
AD-aware Personal (http://www.lavasoft.com/): A product from Lavasoft, this spyware removal software provides advanced protection from known data-mining, aggressive advertising, Trojans, dialers, malware, browser hijackers, and tracking components b detecting known and unknown variants of malware by using the Code Sequence Identification (CSI) technology. It scans fixed and removable drives, memory and Windows registry.
Spy Cleaner Lite (http://www.spycleaner.net/): Programs and applications that automatically install themselves on your system are identified and removed by Spy Cleaner. It scans for traces of recognized adware modules in the DAT files, registry and temporary Internet files. After the search, it provides you with a log file.
Spy-Ad Exterminator Free: The software scans for and deletes, ignores, or quarantines your system’s memory, hard drives, and registry for spyware, adware, worms, hijacks, keyloggers, IE Toolbars, etc. Has up to 20,000 malwares in database, which can be updated online.
Disspy Lite: The Disspy Lite scans memory, registry, cookies, files and folders and removes all detected malwares such as keyLoggers, Hijackers, Dialers, Spyware, Adware, Browser Helper Objects, Spyware cookies, aggressive advertising and other malware. All removed files are quarantined for restoration when needed, and users can choose to be alerted whenever a newer database version is available for download. Download available at http://www.h-desk.com/new/Download.12.0.html/
Free Spyware Scanner (www.spyscanner.net): This spyware remover has a huge database of spy components which infects the system, and offers remarkable features such as options for scanning your drives and Registry, updating online, and saving the last, best system set-up as a backup, and the option of saving log file of the scan result and file deletion for future reference.
AdDriller (www.cdmworld.com): AdDriller scans and cleans over 30,000 now malwares. It also includes features such as like active monitoring and HEX Viewers besides removing adware, spyware, malware, Trojans etc, and new features such as scheduling, scan depth, messenger services enable and disable.
Malware Sweeper (http://www.malwaresweeper.com/): This remover not only scans your registry and drives for known adware modules and Spywares, but for your active memory ad components, which are not stored on your hard drive and last only as long as the computer is powered up. It also removes bundled spyware components from Kazaa, Morpheus, audiogalaxy, grokster, Limewire, Imesh, Gnutella.