Free computer security programs

ANTI-VIRUS

• AVG 9.0
  

• Avast Home
  

• Avira
  

• Comodo Antivirus
  

FIREWALLS

• Comodo Firewall
  
• Zone Alarm Basic
  
• Netdefender
• R-Firewall

ANTI-SPYWARE

• Spybot Search and Destroy
• Malwarebytes
• Ad-Aware
• CWShredder
• HijackThis

SYSTEM MAINTENANCE

• Glary Utilities
• CCleaner