Oracle - (Open Source)
VirtualBox is an easy and elegant solution for those who want to control a computer from another computer.
VirtualBox offers virtualize your operating system (OS) guests on a host machine. Called hypervisor, the application supports Windows OS X, Linux, Mac, Solaris, FreeBSD, etc.. as host, Mac OS X missing the call as a guest.
It also includes a remote access via HTTP protocol, convenient for demonstrations on a clean system. The ability to manage multiple states of the system is particularly interesting and its interface is very simple.
Virtualization solutions allow installing an operating system on a virtual machine using the resources of the host PC , thus enjoying very good performance. In the genre, several solutions are known for their ease of use, such as VMware Workstation , Parallels Desktop or Microsoft Virtual PC 2007 SP1.
A virtual machine is a useful way to use two operating systems simultaneously and harmless to the host computer. There is the possibility to install Linux on a virtual machine on Windows and vice versa .
VRDP: fixed screen corruption
NAT: the interface stopped working after a lot of failed ICMP requests (bug #9371)
E1000: fixed rare Windows 7 guest hangs, either at boot time or when reconfiguring the network card in unusual setups (bug #6223)
ATA: fixed a possible crash during ATAPI passthrough with certain guests
ATA: improved compatibility with ancient Linux kernels
Main: fixed incorrect framebuffer information after leaving the fullscreen mode with X11 guests, this lead to a scrambled preview window in the GUI for example
Mac OS X hosts: fixed the problem with duplicate packets when bridged to a wireless interface (bug #9648)
Linux hosts: fix for 3D support on Fedora 15 (bug #9799)
Linux hosts: don't call del_timer_sync from an interrupt context (Fedora bug report 746331)
Windows Vista and 7 guests: more WDDM fixes
Linux Additions: fixed kernel module compilation failure on Redhat Enterprise Linux 4 (bug #9709)
Linux Additions: install the DRI driver correctly on Ubuntu 11.10 guests
Solaris Additions: added read-only mmap support for shared folders
Solaris Additions: added directory, file mode and mask options for shared folders
Windows Additions: implemented faster detection of logged-in guest users and stale sessions
X.Org Additions: fixed graphical corruption when switching to a virtual terminal (bug #9490)