| Software | Windows | Mac | Linux | FreeBSD | Unix | License | On-demand scan | On-access scan | Boot-time scan |
| AOL Active Virus Shield | Yes | No | No | No | No | Free | Yes | Yes | No |
| Avast! Home Edition | Yes | NO | Yes | NO | NO | Free | Yes | Yes | Yes |
| BitDefender Free Edition | Yes | No | No | No | NO | Free | Yes | Yes | No |
