#5598
It's no secret that Microsoft's Xbox 360 platform owns a lot of exclusive games. If you don't have an expensive Xbox 360 game console and want to play the Xbox 360 exclusive games for free on your PC, you can try out this Xbox 360 emulator xenia. This is the only working solution to emulate the Xbox 360 console on a computer right now.

#5565
xemu is a free, open-source, and cross-platform Xbox emulator made by Matt Borgerson, continuing much of the work done on XQEMU. It emulates the hardware of the original Xbox game console of Microsoft, allows users to play their Xbox games on Windows, Mac and Linux platforms.

#2177
Cxbx is the world's first Microsoft Xbox emulator for Windows, developed by a group of programmers led by Caustik from Canada, written in C++. And it is tiny (100+ KB), fast, completely free and open source.