【wikipedia】DOS / Windows
Microsoft MS-DOS 1981年 / Windows 1985年11月20日
Boot Camp
http://support.apple.com/kb/HT1461?viewlocale=ja_JP
Parallels Desktop for Mac
http://www.parallels.com
VMware Fusion for Mac
http://www.vmware.com
Virtual Box
https://www.virtualbox.org
CrossOver Mac
http://www.codeweavers.com/products/crossover-mac/
Wine
http://www.winehq.org
QEMU
http://wiki.qemu.org
DOSBox
http://www.dosbox.com
Boxer
http://boxerapp.com
bochs
http://bochs.sourceforge.net
iEmulator
http://www.iemulator.com
Guest PC
http://www.lismoresystems.com/
MESS
http://www.mamedev.org
http://www.mess.org