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Microsoft Windows Defender - http://www.microsoft.com/athome/security/spyware/software/default.mspx
Spyware scanning and removal tool, with realtime system monitoring. Free for licensed Windows customers. |
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Spybot Search & Destroy - http://www.safer-networking.org/
Searches whole computer or just a certain file for malicious software commonly missed by anti-virus programs. Can be used to clean usage tracks. For 32-bit Windows, XP AMD 64, Symbian, Linux/Unix with Wine. |
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Avira AntiVir - http://www.free-av.com/
Free antivirus package for use by private individuals. User guide and link to support forum. |
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AVG Free Edition - http://free.avg.com/
The free version of Grisoft's anti-virus and anti-spyware programs, for personal use with Windows or Linux. |
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Avast 4 Home Edition - http://www.avast.com/eng/avast_4_home.html
Antivirus package available free for noncommercial home users. |