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.

• GUI: fixed keyboard shortcut handling regressions (Mac OS X hosts only; bugs #15937 and #15938)
• GUI: fixed keyboard handling regression for separate UI (Windows hosts only; bugs #15928)
• NAT: don't exceed the maximum number of "search" suffixes. Patch from bug #15948.
• NAT: fixed parsing of port-forwarding rules with a name which contains a slash (bug #16002)
• NAT Network: when the host has only loopback nameserver that cannot be mapped to the guests (e.g. dnsmasq running on 127.0.1.1), make DHCP supply NAT Network DNS proxy as nameserver.
• Bridged Network: prevent flooding syslog with packet allocation error messages (bug #15569)
• Audio: now using Audio Queues on Mac OS X hosts
• Audio: fixed recording with the PulseAudio backend (5.1 regression)
• Audio: various bugfixes
• Snapshots: fixed regression in 5.1.4 for deleting snapshots with several disks (bug #15831)
• Snapshots: crash fix and better error reporting when snapshot deletion failed
• Storage: some fixes for the NVMe emulation with Windows guests
• API: fixed initialization of SAS controllers (bug #15972)
• Build system: make it possible to build VBox on systems which default to Python 3
• Windows hosts: detect certain cases of REGDB_E_CLASSNOTREG errors and print a helpful error message
• Windows hosts: adapted to changes in Windows 10 build 14901 (bug #15944)
• Windows hosts: better support for processor groups on Windows 7 and later which is required on certain hosts with many CPUs
• Windows installer / Additions: added option to prevent creating of start menu items (bug #15922)
• Windows Additions / VGA: if the guest's power management turns a virtual screen off, blank the corresponding VM window rather than hide the window
• Windows Additions: fixed a generic bug which could lead to freezing shared folders (bug #15662)
• Linux hosts / guests: fix for kernels with CONFIG_CPUMASK_OFFSTACK set (bug #16020)
• Linux Additions: don't require all virtual consoles be in text mode. This should fix cases when the guest is booted with a graphical boot screen (bug #15683)
• Linux Additions: added depmod overrides for the vboxguest and vboxsf kernel modules to fix conflicts with modules shipped by certain Linux distributions
• X11 Additions: disable 3D on the guest if the host does not provide enough capabilities (bug #15860)