Although it's designed to work with a network appliance, FortiClient 5.0 also functions as a standalone antivirus, with parental control and VPN client thrown in. And it's free!

Fortinet® -- a world leader in high-performance network security -- today announced FortiOS 5.0, the world's most advanced security operating system that is the foundation for all Fortinet ...

Fortinet® -- a world leader in high-performance network security -- today unveiled a major update to the company's FortiOS network security operating system that powers the FortiGate platform ...

Although it's designed to work with a network appliance, FortiClient 5.0 also functions as a standalone antivirus, with parental control and VPN client thrown in. And it's free!