In short, it does so much of what I need it to do that the commercial competitors don't have an appeal for me. I sometimes wonder if VMWare Fusion would be worth it, for the raw device support, etc., but I understand that it can be configured in VirtualBox, with patience and Terminal-fu. For free (I, too, was tired of the 'subscription model' annual upgrade pleas/threats), I really have to try to find a problem with it. Parallels seems to virtualize Mac OS more smoothly. It works well with most Linuxes I throw at it (have had some issues with Linux Mint and video drivers). I triple boot on my MacBook, but may toss that for using virtualized PCs. Two-way clipboard support just works, and the granular control over the emulated hardware (how many cores, how much RAM, what size drive, etc.) makes it sweet for testing system parameters. It's not quite as nice to configure as Parallels, but once it's running it's fantastic. What can be said has mostly been said, but I'll chime in. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while innotek ensures the product always meets professional quality criteria. VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. Presently, VirtualBox runs on Windows, Linux and Mac hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7, Windows 8, Windows 10), DOS/Windows 3.x, Linux (2.4, 2.6, 3.x and 4.x), Solaris and OpenSolaris, OS/2, and OpenBSD. 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 General Public License (GPL).

VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use.

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