Security

Avast 4 Home Edition
Antivirus package available free for noncommercial home users.
http://www.avast.com/eng/avast_4_home.html

AVG Free Edition
The free version of Grisoft's anti-virus and anti-spyware programs, for personal use with Windows or Linux.
http://free.avg.com/

Avira AntiVir
Free antivirus package for use by private individuals. User guide and link to support forum.
http://www.free-av.com/

KeePass
An open-source password safe. Passwords can be stored in highly-encrypted databases, that can be unlocked with one master key or key-disk. For 32-bit Windows. Links to a port for Linux and MacOS X, and a converter for PalmOS.
http://keepass.sourceforge.net/

KL-Detector
Software to detect keylogging activity on the computer and information on how to remove a keylogger installed on the system.
http://dewasoft.com/privacy/kldetector.htm

Microsoft Windows Defender
Spyware scanning and removal tool, with realtime system monitoring. Free for licensed Windows customers.
http://www.microsoft.com/athome/security/spyware/software/default.mspx

Protected Storage PassView
Small utility that reveals the passwords stored on your computer by Internet Explorer, Outlook Express and MSN Explorer. [Windows 95/98/ME/NT/2000/XP]
http://www.nirsoft.net/utils/pspv.html

R-Firewall
Free personal firewall for home or corporate users. Allows multiple configurations. Can be used to block objectionable content as well as monitor network connections and check e-mail attachments. [Windows 98/2000/XP/2003]
http://www.r-firewall.com/

Spybot Search&Destroy
This program searches your whole computer or just a certain file for viruses commonly missed by other anti-virus programs. It lets you clean usage tracks and some registry inconsistencies and extended reports.
http://www.spybot.info/

SpywareGuard
Provides a real-time protection solution against spyware.
http://www.javacoolsoftware.com/spywareguard.html

Symantec Removal Tools
Freeware executables designed to remove specific viruses from a system.
http://www.symantec.com/avcenter/tools.list.html

TritaFile
Program that shreds any file archive, hidden, system, read only, or folder. [Win32]
http://www.tritafile.com/