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 .
# The following items were fixed and/or added:
* VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT caused by VMCB caching with nested paging on certain AMD CPUs
* VMM: fixed a Guru Meditation VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE while intercepting debug exceptions (VT-x only)
* VMM: fixed a Guru Meditation VERR_SVM_UNEXPECTED_EXIT while intercepting debug register accesses (AMD-V only)
* VMM: fixed a VERR_SSM_STRUCTURE_MAGIC error when trying to load a saved state made with VBox 4.3.4 when VT-x/AMD-V is disabled. Unfortunately, VBox 4.3.4 produced broken saved states for this configuration so you have to discard these states
* VMM: added a few more MSRs to the whitelist required by certain guests
* GUI: fixed deleting of inaccessible VMs (4.3 regression)
* GUI: fixed warnings in VM settings / number of guest processors
* Main: don't automatically enable 64-bit guests on 64-bit hosts if VT-x/AMD-V is not available
* Main: always expose the DMI memory information to Windows 2012 guests
* Main: fixed occasional crashes on guest display resolution change
* Main: fixed reporting back temporary name when calling IGuestSession::DirectoryCreateTemp()
* API: fix for a hang when launching a GUI VM through the API, which crashes due to GUI unavailability
* Storage: fix for BLKCACHE_IOERR runtime errors under rare circumstances
* Network: allow to start more than 5 PCNet instances
* E1000: if the cable was disconnected before the guest initialized the device, the link status was not properly set to 'down' after the initialization completed despite the fact that there was no connection
* 3D support: fixed offset of guest 3D image elements (Mac OS X Retina hosts only)
* Solaris hosts: fixed accessing the host driver from non-global zones (4.3 regression)