VirtualBox 5.1.0 Beta 1
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.
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.
# The following major new features were added:
* VMM: new APIC and I/O APIC implementations that result in significantly improved per-formance in certain situations.
* VMM: added support for Hyper-V paravirtualized debugging of Windows guests.
* VMM: emulate even more MMIO and shadow pagetable exits without going back to user mode.
* GUI: overall migration to Qt5.
* GUI: passive API event listener improving the VM GUI performance and response time.
* better support for Python 3 .
# In addition, the following items were fixed and/or added:
* VMM: many fixes.
* GUI: the Detach UI action is now a part of the VM Machine menu.
* GUI: reworked session information window.
* GUI: the new VM wizard now allows to choose the VM location for the VM which is being created.
* GUI: various bugfixes and internal cleanup.
* Storage: use fallocate or similar if present to speed up creating fixed-sized disk images.
* Storage: implemented NVMHCI-compatible storage controller.
* EFI: many improvements, for example allow to boot from USB.
* OVF: improved handling of signed manifests.
* Windows hosts: rework COM proxy.
* Linux installers: no longer rely on DKMS for module rebuilding.