VirtualBox 4.3 Beta 3

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product, suitable for enterprise and home use. VirtualBox is not only an extremely feature-rich, high-performance product for enterprise customers, but it is also the only professional solution that is provided free of charge as an open source software under the terms of the GNU General Public License (GPL) version 2.

Currently, VirtualBox runs on Windows, Linux, Macintosh and Solaris 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.

VirtualBox is being actively developed and released frequently, and has a growing list of features, supported guest operating systems and operating platforms. VirtualBox is a community effort supported by a specialized company: everyone is encouraged to contribute, while Oracle ensures that products always meet professional quality standards.

• VMM: implemented thread-context hooks for Linux and Solaris hosts
• VMM: several fixes
• GUI: added NAT networks to the global settings page
• GUI: made NAT network a separate network attachment type
• 3D Support: fixed Google Chrome and IE rendering under Window 8.1
• 3D Support: fixed DXDiag crashes mentioned here
• NAT service: several fixes
• Main: eliminate the use of SysV semaphores on all host OSes other than Windows, namely Linux, Solaris and Mac OS X, with the consequence that no system reconfiguration is needed to run more than approximately 100 VMs
• Windows hosts: fixed crashes on Windows 8.1
• Linux hosts: fix hanging GUI on EL4 and EL5 distributions with old libX11 versions
• Linux Additions: Linux 3.11 shared folders fix
• Linux Additions: Linux 3.12 fixes