From Bufferzone Security:
BufferZone's patented Virtual Sandboxing technology provides the final layer to your computer's defenses. BufferZone technology is a preventative and proactive approach that complements the reactionary method used by all traditional anti-viruses. BufferZone Free download gives you basic BufferZone protection against Internet threats. BufferZone Free prevents ALL threats, even unknown (zero-day) threats that anti-virus misses. There are no signature updates, no maintenance and no response time. BufferZone Free contains your Internet activities inside an isolated environment called the "Virtual Zone." The Virtual Zone is displayed as a red border around your screen. All potentially threatening programs and files remain isolated from your PC's operating system. Your personal and private information stays in a separated trusted environment. All virtualized and trusted programs and files are easily viewable in the same interface. In the Virtual Zone, you can browse the Web (with Internet Explorer), chat (with MSN Messenger) and download any file or application without threatening your PC and personal files.
What's new in this version:
Additional protection for networking and removable devices.