VirtualBox is not only easy to install on Ubuntu, or other platforms, but is also easy to use.

How to automate configuration management for free using Ansible, Ubuntu, VirtualBox How-To Feb 25, 2019 10 mins Network Management Software Routers System Management ...

VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is a professional-quality virtualization solution that is also Open Source Software.