Released updated version of VirtualBox 3.1.4. VirtualBox - Free Virtualization System, or program to run on the same computer multiple virtual operating systems, similar to VMware Workstation and toll free MS Virtual PC.
Supports dynamic translation - to most of the instructions guest OS is on real hardware. As the host systems supported 32 - and 64-bit versions of Linux, Windows, Mac OS, Solaris, and the role of the guest can serve Windows, GNU / Linux, BSD, Solaris and other operating systems.
Pros: compact, free, proper support for VMware, high performance. Quite a significant drawback: there is no way by drag'n'drop - ie Drag & Drop - drag and drop files to a virtual machine (have to use NAT connection).
