QEMU

Experiment freely with operating systems using QEMU, a robust, open-source emulator and virtualizer. It allows you to create self-contained virtual machines that mimic real computers, where you can install and run any OS you choose. This eliminates the fear of damaging your primary setup or needing spare hardware. Whether you're deciding on a new primary OS, developing software for multiple platforms, or studying system behaviors, QEMU offers a flexible and cost-free playground. Its active community and extensive documentation support both beginners and advanced users in their exploration.