Security
Selection of security tools (antivirus, anti-malware, anti-spyware, etc ...) for Microsoft Windows.
Microsoft Security Essentials
http://www.microsoft.com/en-US/security_essentials/default.aspx
Good freeware antivirus published by Microsoft.
Avira Antivir Personal Edition
http://www.avira.com/en/avira-free-antivirus
Excellent freeware antivirus.
KeePass Password Safe
Keeps passwords in an encrypted file. This free software is a digital safe specializing in passwords management.
Secunia Personal Software Inspector
http://secunia.com/vulnerability_scanning/personal/
Checks for available updates for software installed on the computer. Slow computers with limited resources.
Malwarebytes' Anti-Malware
http://www.malwarebytes.org/products/malwarebytes_free
Check for malware presence on the system.
Spybot Search & Destroy
http://www.safer-networking.org/fr/home/index.html
Check for spyware presence on the system.
Microsoft Baseline Security Analyzer
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=7558
Check the system and local network for security issues.