VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. VirtualBox is a powerful x86 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License. Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD. VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on.Some of the features of VirtualBox are:
• 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).
• 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.
A number of extra features are available with the full VirtualBox release only (see the “Editions” page for details):
• 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.
Changes in VirtualBox 4.1.8 (released 2011-12-19):
* VMM: fixed VERR_MAP_FAILED during savestate under certain circumstances (bug #7929)
* GUI: stop updating the VM status icons when the VM is paused (bug #8368)
* VBoxManage: fixed wrong return code after startvm (bug #9642)
* BIOS: fixed hang at launch of DOS applications generated by Clipper 5.3 (note that hardware virtualization may be required)
* USB: fixed OS/2 boot hang when using recent USB drivers
* NAT: increase maximum number of parallel connections making connections with port forwarding more robust (#8471)
* Metrics: fixed potential problem with invalid access in guest metrics collection upon VM destruction
* Main: don’t crash if a medium is ejected twice (bug #9922)
* VBoxSVC: fixed crash under rare circumstances (e.g. client crash)
* VRDP: fixed screen freeze (bug #9620)
* OVF/OVA: fixed broken disk images on import under rare circumstances
* OVF/OVA: better error message when importing corrupted appliances
* VMDK/VHD: fixed a possible corruption with host cache disabled when using snapshots under rare circumstances (bug #9749)
* 3D Support: Fixed fullscreen mode issues for ATI graphics (bug #9775), Windows Media Player rendering for XPDM-based Direct3D support (bug #8341). Multiple fixes to XPDM and WDDM – based 3D support for Windows Guests and for 3D support in general
* Linux hosts: fixes for Fedoras Linux 2.6.41 (bug #9948)
* Linux hosts/guests: fixes for Linux 3.2 (bug #9743)
* Solaris Additions: various shared folder fixes (bugs #9856, #9862, #9917)
* Windows Additions: various fixes for Direct3D support (un)installation, added detection of missing or wrong Direct3D system files
Homepage – http://www.virtualbox.org
Size: 87.3 MB
Download VirtualBox 4.1.8 for Windows
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