VirtualBox is a general-purpose full virtualizer for hardware. Targeted at server, desktop and embedded use, VirtualBox is now the only professional-quality virtualization solution that is also Open Source Software.VirtualBox is a package of strong x86 virtualization software for enterprise as well as home use.

Key Features:
· Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox.
· Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers.
· Guest Additions for Windows and Linux. VirtualBox has special software that can be installed inside Windows and Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these Guest Additions are mouse pointer integration and arbitrary screen solutions (e.g. by resizing the guest window).
· Virtual USB Controllers. VirtualBox implements a virtual USB controller and allows you to connect arbitrary USB devices to your virtual machines without having to install device specific drivers on the host.
· Remote Desktop Protocol. Unlike any other virtualization software, VirtualBox fully supports the standard Remote Desktop Protocol (RDP). A virtual machine can act as an RDP server, allowing you to "run" the virtual machine remotely on some thin client that merely displays the RDP data.
· USB over RDP. With this unique feature, a virtual machine that acts as an RDP server can still access arbitrary USB devices that are connected on the RDP client. This way, a powerful server machine can virtualize a lot of thin clients that merely need to display RDP data and have USB devices plugged in.
· Shared folders. Like many other virtualization solutions, for easy data exchange between hosts and guests, VirtualBox allows for declaring certain host directories as "shared folders", which can then be accessed from within virtual machines.

What's New:
· VMM: fixed network regressions (guest hangs during network IO) (bug #4343)
· VMM: guest SMP performance improvements
· VMM: fixed hangs and poor performance with Kaspersky Internet Security (VT-x/AMD-V only; bug #1778)
· VMM: fixed crashes when executing certain Linux guests (software virtualization only; bugs #2696 & #3868)
· ACPI: fixed Windows 2000 kernel hangs with IO-APIC enabled (bug #4348)
· APIC: fixed high idle load for certain Linux guests (3.0 regression)
· BIOS: properly handle Ctrl-Alt-Del in real mode
· iSCSI: fixed configuration parsing (bug #4236)
· OVF: fix potential confusion when exporting networks
· OVF: compatibility fix (bug #4452)
· NAT: fixed crashes under certain circumstances (bug #4330)
· 3D support: fixed dynamic linking on Solaris/OpenSolaris guests (bug #4399)
· 3D support: fixed incorrect context/window tracking for multithreaded apps
· Shared Folders: fixed loading from saved state (bug #1595)
· Shared Folders: host file permissions set to 0400 with Wi...

Homepage: www.virtualbox.org

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