QEMU

QEMU is a powerful, free, and open-source system emulator and virtualizer. It allows you to run operating systems designed for one machine (like ARM or RISC-V) on a completely different host machine (like your x86 PC). This makes it an invaluable tool for developers, testers, and enthusiasts to build, test, and run software for diverse architectures without needing the physical hardware. Beyond emulation, QEMU can also perform hardware virtualization for superior performance when running the same CPU architecture. Its versatility supports exploring a vast library of OSes, from legacy systems to cutting-edge builds, in a safe, isolated sandbox before you commit to an installation.