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. (Free) I highly recommend Wine, which allows for running Windows applications without actually emulating the whole Windows OS. I don't know how well it works with 3D stuff. I would also not recommend compiling it yourself. You do need to install the Developer Tools, included on your computer's install disc. I would recommend a free binary installer that also allows you to turn a Windows executable into a simple application that launches in X11.
Mar 18, 2012 VirtualBox, is a free virtual machine emulator that can let you run Windows apps on Mac OS X 10.7 Lion. Other links: How to install Windows XP on BootCamp un. Best Xbox Emulators for Windows and MAC Here’s the List of Best Xbox Emulators for your Windows XP, Windows 7, Windows 8 and Windows 10 PC as well as MAC OS X. You can run these Xbox emulators on your computer to play the amazing games.
Wine (and Crossover) do not require an actual copy of Windows installed on your machine. ($39.95) Professionally supported enhancement of Wine (Free) Q is a great lightweight CPU emulator for OS X. Oddly enough, it runs on PPC Macs, in addition to Intel Macs.
It supports emulating x86, x86-64bit, PPC PowerMac, PPC PREP, SPARC32, MIPS, and ARM processors. (Free) Virtualbox is not quite as lightweight as Q. It supports x86 and AMD processors. It allows multiple operating systems to run on your computer.
![Emulator Emulator](http://appinventor.mit.edu/explore/sites/all/files/SetupAI2/emulator/emulator_connect_progress.png)
(Free) - Comes with all Intel Macs I would recommend Boot Camp for 3D stuff. I haven't actually installed it on a Mac, I've used a friend's computer, so I can't help you with installation. As with anything Apple-related, it should be pretty straightforward. It also runs really well. (Free) Another lightweight emulator. This one is somewhat confusing to download; I think you have to compile the emulator by hand.
![Mac Os X Emulator On Windows 7 Mac Os X Emulator On Windows 7](/uploads/1/2/5/6/125627805/111891455.png)
($80) by VMware I don't use VMware (I like the free stuff), but I've heard good things about it. ($80) I haven't used Parallels, but it used to come for free with a new Mac. It still may, but I'm not sure.