Anti-Spyware and Anti-Virus Software

• Windows Defender
  Microsoft
  Windows
• SUPERAntiSpyware
  SUPERAntiSpyware
  Windows
• Malwarebytes' Anti-Malware
  Malwarebytes
  Windows
• avast! Antivirus
  ALWIL Software
  Windows
• Avira AntiVir
  Avira GmbH
  Windows / Linux
• AVG Anti-Virus Free
  AVG Technologies, formerly Grisoft
  Windows
• Ad-Aware
  Lavasoft
  Windows
• ClamXav
  Mark Allan
  Mac
• SpywareBlaster
  Javacool Software
  Windows
• Spybot - Search & Destroy
  Safer Networking Ltd.
  Windows
• Spyware Terminator
  Crawler
  Windows
• Spyware Doctor
  PC Tools
  Windows
• a-squared Free
  Emsi Software
  Windows