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.

Features:

  • 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, Linux and Solaris. VirtualBox has special software that can be installed inside Windows, Linux and Solaris 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). There are also guest additions for OS/2 with somewhat reduced functionality.

  • 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.

What's New:

This is a maintenance release. The following items were fixed and/or added:

  • GUI: Fix several layout and mouse position handling bugs with soft keyboard
  • GUI: Fixed crash on last VM removed (6.1.4 regression; bug #19568, #19525, #19506, #19490, #19481, #19397)
  • GUI and API: Allow renaming VMs which are in saved state
  • Serial: Fixed slow guest output when using the TCP server mode without anyone being connected
  • Guest Additions: Restored 'VBoxClient--checkhostversion' functionality (6.1.0 regression; bug #19470)
  • Guest Additions: Fixed resizing and multi monitor handling for X11 guests. (6.1.0 regression; bug #19496)
  • Guest Additions: Build problems fix with Oracle Linux 8.2 (Red Hat compatible kernel) / Red Hat Enterprise Linux 8.2 / CentOS 8.2 (bug #19391)
  • Guest Control/VBoxManage: Fixed handling of multiple environment variables supplied to 'VBoxManage guestcontrol VM run' (6.1.6/6.0.20 regression; bug #19518)
  • Guest Control: Implemented support for long(er) command lines
  • Guest Control: Various stability improvements