Anti-virus
PC
- Kaspersky virus scanner
- F-Secure online virus scanner
- McAfee Internet security suite
- Sophos anti-virus
- Virus bulletin
- NOD anti-virus system
- Web root spy audit
- Symantec security check
- McAfee free scan
- McAfee AVERT Stinger
- F-Secure Healthcheck - this checks your PC has all the relevant updates, including operating system and anti-virus
Mac
- Avast Mac Edition
- Sophos Anti-Virus for Mac
- McAfee Virex for Mac
- Free Anti-Virus scanner for Mac from ClamAV