Is VirtualBox free to use?

**VirtualBox** is open-source software and its base package is licensed under the GNU General Public License (GPLv3), making it free for personal and evaluation use.

What operating systems can VirtualBox run?

**VirtualBox** supports a wide array of guest operating systems, including various versions of Windows, Linux distributions, macOS (under certain conditions), Solaris, BSD, and OS/2.

How do I improve the performance of a VirtualBox virtual machine?

To enhance performance, ensure **Guest Additions** are installed in the virtual machine, allocate sufficient RAM and CPU cores (without over-allocating from the host), enable hardware virtualization features (VT-x/AMD-V) in your system's BIOS/UEFI, and consider using fixed-size virtual disks.