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. VirtualBox is also the only professional solution that is freely available as Open Source Software under the terms of the GNU Public License (GPL).

VirtualBox runs on Windows and Linux 32-bit hosts and supports a large number of guest operating systems including but not limited to Windows, DOS/Windows 3.x, Linux 2.4 and 2.6, and OpenBSD.

Changelog:

• USB 2.0 support
• PulseAudio backend
• GUI: fixed accelerators in German translation
• GUI: fixed registration dialog crashes
• GUI: allow to enter unicode characters to the name of the registration dialog
• GUI: pre-select attached media in the disk manager when opened from the VM settings dialog
• GUI: remember the last active VM
• GUI: don’t accept empty paths for serial/parallel ports in XML
• GUI: fixed NumLock / CapsLock synchronizazion on Windows hosts
• GUI: don’t start the kernel timer if no VM is active (Linux host)
• VMM: improved compatibility with FreeBSD guests
• VMM: properly restore CR4 after leaving VT-x mode
• VMM: patch code and disassembler updates
• VMM: with VT-x a pending interrupt could be cleared behind our back
• VMM: workaround for missed cpuid patch (some Linux guests refuse to boot on multi-core CPUs)
• VMM: fixed code for overriding CPUID values
• API: don’t crash when trying to create a VM with a duplicate name
• API: don’t crash when trying to access the settings of a VM when some other VMs are not accessible
• API: fixed several memory leaks
• ATA/IDE: fixed SuSE 9.1 CD read installer regression
• Floppy: fixed inverted write protect flag
• USB: virtualize an EHCI controller
• USB: several minor fixes
• Network: fixed MAC address check
• Network: host interface fixes for Solaris guests
• Network: guest networking stopped completely after taking a snapshot
• Network: don’t crash if a network card is enabled but not attached
• PXE: fix for PXE-EC8 error on soft reboot
• NAT: update the DNS server IP address on every DNS packet sent by the guest
• VGA: reset VRAM access handers after a fullscreen update
• VGA: don’t overwrite guest’s VRAM when displaying a blank screen
• ACPI: implemented the sleep button event
• VRDP: fixed crash when querying VRDP properties
• VRDP: netAddress fixes
• VRDP: fixed the Pause/Break keys over VRDP
• VRDP: sync NumLock / CapsLock sync over VRDP
• VRDP: workaround for scrambled icons with a guest video mode of 16bpp
• VRDP: reset modifer keys on RDP_INPUT_SYNCHRONIZE
• VRDP: reset RDP updates after resize to prevent obsolete updates
• Clipboard: Windows host/guest fixes
• Clipboard: fixed a SEGFAULT on VM exit (Linux host)
• Clipboard: fixed a buffer overflow (Linux host)
• Shared Folders: fixed memory leaks
• Linux installer: remove the old kernel module before compiling a new one
• Linux host: compatibility fixes with Linux 2.6.24
• Linux host: script fixes for ArchLinux
• Linux host: load correct HAL library to determine DVD/floppy (libhal.so.1 not libhal.so)
• Linux host: make sure the tun kernel module is loaded before initializing static TAP interfaces
• Windows additions: fixed hang during HGCM communication
• Windows additions: fixed delay when shutting down the guest
• Linux additions: added sendfile support to allow HTTP servers to send files on shared folders
• Linux additions: make additions work with Fedora 8 (SELinux policy added)
• Linux additions: sometimes ARGB pointers were display incorrectly
• Linux additions: several small script fixes

Download:
VirtualBox 1.5.4 for Windows x86, AMD64
Other Platforms