VirtualBox is a free and open-source virtualization software that allows users to create and run virtual machines on their computers. With VirtualBox, users can install and run multiple operating systems simultaneously on their computer without having to create separate partitions or buy additional hardware.

one of the main advantages of VirtualBox is its ease of use. It is simple to install and set up, even for those who have little or no experience with virtualization technology. VirtualBox also offers a wide range of customization options, including the ability to adjust the amount of RAM, CPU cores, and hard disk space allocated to each virtual machine.

Another great feature of VirtualBox is its compatibility with a wide range of operating systems. Users can install and run Windows, Linux, macOS, and many other operating systems on their virtual machines. This makes it an excellent tool for developers, software testers, and anyone who needs to run multiple operating systems on a single computer.

VirtualBox also offers a range of advanced features, such as support for USB devices, shared folders, and network adapters. These features make it possible to run software that requires hardware or network resources, such as virtual routers, firewalls, and servers.

VirtualBox is an excellent choice for anyone who needs to run multiple operating systems on a single computer. Its ease of use, wide range of customization options, and compatibility with many different operating systems make it a versatile and powerful tool for developers, IT professionals, and home users alike.

Key Feature:

• Cross-platform compatibility.
• Intuitive graphical user interface.
• Support for various operating systems.
• Seamless integration with host operating system.
• Snapshots and clones.
• Networking capabilities.
• Virtual device support.
• Extension packs for additional functionality.

• VMM: fixed a problem which could lead to a wrong guest behavior on AMD CPUs (tickets #14831and #15186)
• GUI: don't try to synchronize the HID LEDs if the VM window is not active or if it's minimized (Windows / Mac OS X hosts only; bug #14302)
• GUI: prevent a crash during startup under rare conditions
• GUI: sub-menu option to disable the guest-OS type overlay in the application dock icon on Mac OS X
• GUI: position off-screen windows to be fully visible again on relaunch
• GUI: hide the VT-x/AMD-V checkbox if raw-mode is not supported (usually Mac OS X hosts; bug#15178)
• PC speaker passthrough: new experimental feature, available on Linux host only
• Audio: several fixes for Mac OS X hosts + guests
• Audio: properly handle default audio device changes (Windows hosts)
• USB: serveral fixes for the xHCI controller (e.g. for webcam passthrough)
• BIOS: fixed int15/AH=83/AL=00 function (4.2.0 regression)
• iPXE: enable the HTTP download protocol on non-Linux hosts (bug #13628)
• Shared folders: fixed a failure to load the saved state under certain circumstances (bug #6314)
• Guest Control: added support for (cached) Active Directory authentication in case the domain controller is not reachable (anymore)
• Serial ports: raised the number of serial ports per VM from 2 to 4 (bug #9109)
• Serial ports: fix for the TCP/IP backend (Windows hosts only; bug #15188)
• SDK: make the Python webservice API binding work again (5.0 regression)
• Seamless mode: fixed a crash under certain circumstances (bug #15106)
• Linux hosts: fixed the /sbin/rcvboxdrv script as well as the missing shebang in two scripts (bugs#15055 and  believed fixed in releases ... (closed: fixed)'" href="https://www.virtualbox.org/ticket/15057" target="_blank" kesrc="https://www.virtualbox.org/ticket/15057">#15057)
• Linux hosts: properly uninstall Python files installed by the .run installer
• Windows hosts: hardening fix required for recent Windows insider builds (bug #14052)
• Windows hosts: fixed Python installation path (bug #13131)
• Windows hosts: support MTU larger than 2 KB with bridged networking (bug #15140)
• Windows hosts / guests: properly sign binaries using a sha-256 certificate (bug #15054)
• Windows Additions: fixed guest property enumeration of logged-in users
• Windows Additions: fixed sporadical failure of the graphics driver in Windows 10 guests (bug#14409)
• Windows Additions: under rare circumstances no mouse movement events were delivered to the guest