Audio: fixed recording when using the ALSA backend.

Audio: fixed crash when default input or output devices have changed (bugs #16968, #16969, #17004).

Audio: fixed accidental crashes when using the AC’97 sound emulation (bug #16959).

GUI: mouse events did not reach host windows behind the transparent VM window (Mac OS X hosts only bug #16246).

Easy data exchange between hosts and guests.

Guest Additions for Windows, Linux and Solaris.

Well-defined internal programming interfaces.Feature rich, high-performance virtualization solution.You can install and run as many virtual machines as you like – the only practical limits are disk space and memory. So, for example, you can run Windows and Linux on your Mac, run Windows Server 2008 on your Linux server, run Linux on your Windows PC, and so on, all alongside your existing applications. VirtualBox extends the capabilities of your existing computer so that it can run multiple operating systems (inside multiple virtual machines) at the same time.

Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. Oracle VM VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and Innotek VirtualBox) is a powerful, free cross-platform virtualization application for enterprise as well as home use developed by Oracle Corporation.

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