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。

• VMM: fixed an occasional Guru Meditation (Mac OS X hosts only)
• VMM: fixed a rare condition that would fail to invalidate guest TLB entries or would invalidate them when not required (Windows hosts only)
• VMM: fixed a VERR_NOT_SUPPORTED Guru Meditation seen with certain guests, e.g. OpenServer 5.0.7
• VMM: more fixes for MSR emulation on certain hardware
• GUI: fixed mouse positioning with mouse integration disabled and multiple guest screens (Windows hosts only)
• GUI: fixed crash in VM manager
• GUI: fixed crash under rare conditions on entering/exiting fullscreen/seamless mode
• Shared Clipboard: don't stop working after taking a snapshot
• AHCI: fixed a crash under rare circumstances
• API: fixed a hang during VM shutdown under rare conditions
• NAT: fixed generation of malformed ICMP error datagrams (4.3.10 regression)
• NAT: fixed potential crash in DNS proxy
• NAT Network: don't drop port forwarding rules after some time
• NAT: fixed ARP cache corruption and network loss in Windows guest caused by iSCSI service activity
• USB: improved check if a storage device is currently mounted to the host when the device is about to be attached to the VM (Mac OS X hosts only)
• 3D support: several fixes, including better support for Ubuntu 14.04
• VRDP: fixed a potential crash on client disconnect
• VBoxSVC: fixed a race when a new client is started a few seconds after the last client terminated (Windows hosts only)
• VBoxSVC: fixed VirtualBox.xml registry corruption after VM renaming
• VBoxSVC: fixed a potential crash caused by incorrect USB device filter (Mac OS X hosts only)
• Windows hosts: partly support 32-bit COM on 64-bit systems
• Windows host installer: implemented merge module (msm) support
• Linux hosts: fixed dependency of boot script on older Debian systems
• Linux guests: fix symbolic link to shared folder helper
• Linux Additions: don't crash VBoxService during guest execute for users without a password
• Linux Additions: fixed a bug in guest execution where the guest process terminated with VERR_INTERRUPTED to the host