InnoTek 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. 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 Public License (GPL). Presently, VirtualBox runs on Windows and Linux 32-bit hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), and OpenBSD.
VirtualBox 1.3.8 (released 2007-03-14) changelog:
* Windows installer: fixed installation problem if UAC is active
* Linux installer: added RPM for rhel4 and Mandriva 2007.1
* Linux installer: remove any old vboxdrv modules in /lib/modules/*/misc
* Linux installer: many small improvements for .deb and .rpm packages
* Linux installer: improved setup of kernel module
* GUI: Host-Fn sends Ctrl-Alt-Fn to the guest (Linux guest VT switch)
* GUI: fixed setting for Internal Networking
* GUI: show correct audio backend on Windows (dsound)
* GUI: improved error messages if the kernel module is not accessible
* GUI: never fail to start the GUI if the kernel module is not accessible
* VMM: fixed occasional crashes when shutting down Windows TAP device
* VMM: fixed issues with IBM"s 1.4.2 JVM in Linux guests
* RDP: fixed color encoding with 24bpp
* BIOS: zero main memory on reboot
* BIOS: added release logging
* USB: fixed parsing of certain devices to prevent VBoxSVC crashes
* USB: properly wakeup suspended ports
* USB: fixed a problem with unplugged USB devices during suspend
* Audio: fixed crashes on Vista hosts
* NAT: allow configuration of incoming connections (aka port mapping)
* Network: hard reset network device on reboot
* iSCSI: fixed a hang of unpaused VMs accessing unresponsive iSCSI disks
* Linux Additions: support Xorg 7.2.x
* Linux Additions: fixed default video mode if all other modes are invalid
* Linux Additions: set default DPI to 100,100
* Linux Additions: fixed initialization of video driver on X server reset