Spybot - Search & Destroy can detect and remove spyware of different kinds from your computer. Spyware is a relatively new kind of threat that common anti-virus applications do not yet cover. If you see new toolbars in your Internet Explorer that you didn't intentionally install, if your browser crashes, or if you browser start page has changed without your knowing, you most probably have spyware. But even if you don't see anything, you may be infected, because more and more spyware is emerging that is silently tracking your surfing behaviour to create a marketing profile of you that will be sold to advertisement companies.

Spybot-S&D can also clean usage tracks, an interesting function if you share your computer with other users and don't want them to see what you worked on. And for professional users, it allows to fix some registry inconsistencies and extended reports.
Spybot-S&D can start in two modes: Easy mode for new users who want just the basic features, and Advanced mode for professional users and those who want more control. Both modes are available in the free version.

Spybot - Search & Destroy now officially "Works with Vista"

This tool removes Desktop Hijack malware: AdwarePunisher, AdwareSheriff, AlphaCleaner, AntiSpyCheck, Antispyware Soldier, AntiVermeans, AntiVermins, AntiVerminser, AntiVirGear, Antivirus 2009, Antivirus Master, Antivirus XP 2008, AntivirusGolden, AVGold, Awola, BraveSentry, IE Defender, Internet Antivirus, MalwareCrush, MalwareWipe, MalwareWiped, MalwaresWipeds, MalwareWipePro, MalwareWiper, PestCapture, PestTrap, Power-Antivirus-2009, PSGuard, quicknavigate.com, Registry Cleaner, Security iGuard, Smitfraud, SpyAxe, SpyCrush, SpyDown, SpyFalcon, SpyGuard, SpyHeal, SpyHeals, SpyLocked, SpyMarshal, SpySheriff, SpySoldier, Spyware Vanisher, Spyware Soft Stop, SpywareLocked, SpywareQuake, SpywareKnight, SpywareRemover, SpywareSheriff, SpywareStrike, Startsearches.net, TheSpyBot, TitanShield Antispyware, Total Secure 2009, Trust Cleaner, UpdateSearches.com, Virtual Maid, Virus Heat, Virus Protect, Virus Protect Pro, VirusBlast, VirusBurst, VirusRay, Win32.puper, WinHound, Vista Antivirus 2008, XP Security Center, Brain Codec, ChristmasPorn, DirectAccess, DirectVideo, EliteCodec, eMedia Codec, EZVideo, FreeVideo, Gold Codec, HQ Codec, iCodecPack, IECodec, iMediaCodec, Image ActiveX Object, image Add-on, IntCodec, iVideoCodec, JPEG Encoder, Key Generator, LookForPorn, Media-Codec, MediaCodec, MMediaCodec, MovieCommander, MPCODEC, My Pass Generator, NetProject, Online image Add-on, Online Video Add-on, PCODEC, Perfect Codec, PowerCodec, PornPass Manager, PornMag Pass, PrivateVideo, QualityCodec, Silver Codec, SearchPorn, SiteEntry, SiteTicket, SoftCodec, strCodec, Super Codec, TrueCodec, VideoAccess, VideoBox, VidCodecs, Video Access ActiveX Object, Video ActiveX Object, Video Add-on, VideoCompressionCodec, VideoKeyCodec, VideosCodec, WinAntiSpyPro, WinMediaCodec, X Password Generator, X Password Manager, ZipCodec...

This tool removes Desktop Hijack malware: AdwarePunisher, AdwareSheriff, AlphaCleaner, AntiSpyCheck, Antispyware Soldier, AntiVermeans, AntiVermins, AntiVerminser, AntiVirGear, AntivirusGolden, AVGold, Awola, BraveSentry, IE Defender, MalwareCrush, MalwareWipe, MalwareWiped, MalwaresWipeds, MalwareWipePro, MalwareWiper, PestCapture, PestTrap, PSGuard, quicknavigate.com, Registry Cleaner, Security iGuard, Smitfraud, SpyAxe, SpyCrush, SpyDown, SpyFalcon, SpyGuard, SpyHeal, SpyHeals, SpyLocked, SpyMarshal, SpySheriff, SpySoldier, Spyware Vanisher, Spyware Soft Stop, SpywareLocked, SpywareQuake, SpywareKnight, SpywareRemover, SpywareSheriff, SpywareStrike, Startsearches.net, TitanShield Antispyware, Trust Cleaner, UpdateSearches.com, Virtual Maid, Virus Heat, Virus Protect, Virus Protect Pro, VirusBlast, VirusBurst, VirusRay, Win32.puper, WinHound, Brain Codec, ChristmasPorn, DirectAccess, DirectVideo, EliteCodec, eMedia Codec, EZVideo, FreeVideo, Gold Codec, HQ Codec, iCodecPack, IECodec, iMediaCodec, Image ActiveX Object, Image Add-on, IntCodec, iVideoCodec, JPEG Encoder, Key Generator, LookForPorn, Media-Codec, MediaCodec, MMediaCodec, MovieCommander, MPCODEC, My Pass Generator, NetProject, Online Image Add-on, Online Video Add-on, PCODEC, Perfect Codec, PowerCodec, PornPass Manager, PornMag Pass, PrivateVideo, QualityCodec, Silver Codec, SearchPorn, SiteEntry, SiteTicket, SoftCodec, strCodec, Super Codec, TrueCodec, VideoAccess, VideoBox, VidCodecs, Video Access ActiveX Object, Video ActiveX Object, Video Add-on, VideoCompressionCodec, VideoKeyCodec, VideosCodec, WinAntiSpyPro, WinMediaCodec, X Password Generator, X Password Manager, ZipCodec...