X86 emulators

DOSBox is a free and open-source MS-DOS emulator. It supports running programs primarily video games that are otherwise inaccessible since hardware for running a compatible disk operating system (DOS) is obsolete and generally unavailable today. It was first released in 2002, when DOS technology was becoming obsolete. Its adoption for running DOS games is relatively widespread, partly because of its use in commercial re-releases of games.

The Quick Emulator (QEMU) is a free and open-source machine emulator and virtualizer. As a Virtual Machine Monitor (VMM) it supports a number of hypervisors including the Linux based Kernel-based Virtual Machine (KVM), Xen, MacOS's HVF, Window's Hyper-V and a number of others. It is also capable of emulating a number of Instruction set architectures on any supported host through its JIT binary translator known at the Tiny Code Generator (TCG). This allows it to emulate full systems or run individual programs compiled for one processor architecture on any other. QEMU supports the emulation of x

virtualization program for Microsoft Windows

Bochs (pronounced "box") is a portable IA-32 and x86-64 IBM PC compatible emulator and debugger mostly written in C++ and distributed as free software under the GNU Lesser General Public License. It supports emulation of the processor(s) (including protected mode), memory, disks, display, Ethernet, BIOS and common hardware peripherals of PCs.

Apple, Inc. software for Mac OS X and macOS

emulation software that aims to recreate the hardware of many classic home computer systems