VirtualBox是一款免費且開源的虛擬化軟體，允許用戶在電腦上創建和運行虛擬機器。使用VirtualBox，用戶可以在不需要創建單獨的分區或購買額外硬體的情況下，在電腦上同時安裝和運行多個操作系統。

VirtualBox 的主要優勢之一是其易於使用。即使是對虛擬化技術幾乎沒有經驗的人，也可以輕鬆安裝和設置。VirtualBox 還提供廣泛的自定義選項，包括調整分配給每個虛擬機的 RAM、CPU 核心和硬碟空間的能力。

VirtualBox的另一個優點是其與多種作業系統的兼容性。使用者可以在其虛擬機器上安裝和運行Windows、Linux、macOS以及其他許多作業系統。這使得它成為開發人員、軟體測試人員以及需要在單一電腦上運行多個作業系統的人的絕佳工具。

VirtualBox 也提供了一系列的進階功能，如對 USB 設備、共享資料夾和網路配接器的支持。這些功能使得運行需要硬體或網路資源的軟體成為可能，如虛擬路由器、防火牆和伺服器。

VirtualBox 是需要在單一電腦上運行多個作業系統的人的極佳選擇。其易用性、多樣化的自訂選項以及與許多不同作業系統的相容性，使其成為開發人員、IT 專業人士和家庭用戶皆適用的多功能且強大的工具。

關鍵特性：

• 跨平台相容性。
• 直觀的圖形用戶介面。
• 支援各種作業系統。
• 與主機作業系統無縫整合。
• 快照和克隆。
• 網路功能。
• 虛擬設備支援。
• 擴充套件以增加功能。

• GUI: fixed wrong scrolling behaviour in the VM selector window when a VM item is dragged out of the chooser-pane area
• GUI: fixed the validation of IPv6 port-forwarding rules
• GUI: suppress the first-run wizard if a CD/DVD medium is inserted using the selector UI
• GUI: fixed the Ctrl+Break key sequence scan codes (bug #14927)
• GUI: improved handling of text selection mouse pointer (bug #750)
• Host services: fixed a crash during VM shutdown under rare conditions (5.0.6 regression; bug #14841)
• Shared folders: fixed a sharing violation if a file is opened to check the attributes (Windows hosts only; bug #14450)
• Webcam: passthrough fix for certain devices (Mac OS X hosts only)
• XHCI: fixed broken emulation if software virtualization is used
• XHCI: several fixes
• 3D: fixed state handling under certain conditions (bug #13487)
• Audio: several fixes
• BIOS: added LBA64 support for being able to boot from huge hard disks (bug #7415)
• EFI: fix for Windows 10 guests
• ExtPack: before installing an Extension Pack check if there are VMs running to prevent file system locking issues
• rdesktop-vrdp: source code tarball fixes
• Windows hosts: fixed hang when using VBoxAuthSimple library for VRDP external authentication (bug #14931)
• Windows hosts: fixed a regression which prevented it to attach to a physical network adapter having TCP/IP disabled (bug #14578)
• Windows hosts: fixed a regression which caused multi-port adapters to be shown as a single adapter (bugs #14558, #14622)
• Windows hosts: fixed a regression which caused created host-only adapters to not appear in the list (bug #14437)
• Windows hosts: fixed host-only adapter creation issues related to Windows 10 (bugs #14040, #14545)
• Linux hosts: .desktop file compatibility issue (bug #14808)
• Linux hosts / guests: fixes for RHEL 7.2 (bug #14866)
• The command for recompiling the host kernel modules was changed again, to /sbin/rcvboxdrv setup (bug #14723)
• Linux hosts: some fixes for PCI passthrough (still highly experimental)
• Linux/Mac OS X hosts: fixed a VM hang during startup under certain circumstances (bug #14933)
• Solaris hosts: added Python 2.7 bindings
• Mac OS X hosts: fixed a possible crash when the default input or output audio device changes
• Mac OS X hosts: fixed a panic under certain conditions
• Linux Additions: prevent the compiler from doing dead-code elemination on vital code in guest / host communication (bug #14497)
• Linux Additions: when mounting a shared folder, explicitly pass the share name so that /proc/mounts contains this name instead of 'none'
• Linux Additions: workaround for a systemd problem in conjunction with SELinux which prevented to properly enable the 'vboxadd' service during while upgrading the Additions