I haven't used Parallels, but it used to come for free with a new Mac. OnWorks Pear OS online, a MAC OS emulator with an online ease-of-use distribution that has a custom user interface with a Mac OS X-style dockbar, and out-of-the-box support for many popular multimedia codecs. I don't use VMware (I like the free stuff), but I've heard good things about it. This one is somewhat confusing to download I think you have to compile the emulator by hand. As with anything Apple-related, it should be pretty straightforward. I haven't actually installed it on a Mac, I've used a friend's computer, so I can't help you with installation. I would recommend Boot Camp for 3D stuff. Boot Camp (Free) - Comes with all Intel Macs It allows multiple operating systems to run on your computer. Virtualbox is not quite as lightweight as Q. It supports emulating x86, x86-64bit, PPC PowerMac, PPC PREP, SPARC32, MIPS, and ARM processors. Oddly enough, it runs on PPC Macs, in addition to Intel Macs. Q is a great lightweight CPU emulator for OS X. I am not the author of any of the actual emulator applications used by these tools (. I have ported the SDL version of the Atrari800 emulator to Mac. Professionally supported enhancement of Wine Q (Free) x, and classic Mac software on modern Windows, macOS, and Linux systems. This is the home page of the Macintosh OS X Port of David Firths Fantastic Atari 800 Emulator. Wine (and Crossover) do not require an actual copy of Windows installed on your machine. I would recommend Winebottler, a free binary installer that also allows you to turn a Windows executable into a simple application that launches in X11. You do need to install the Developer Tools, included on your computer's install disc. It is written in C++ with portability in mind, with builds. I would also not recommend compiling it yourself. yuzu is an experimental open-source emulator for the Nintendo Switch from the creators of Citra. I don't know how well it works with 3D stuff. I highly recommend Wine, which allows for running Windows applications without actually emulating the whole Windows OS. When using the term 'emulator', it is important to distinguish between something that acts like Windows to applications (like Wine/Crossover) and something that acts like a PC to Windows (most of the other solutions) so that Windows can be installed.

Mac on emulator