Xemu is an active fork of the XQEMU project, which is based on the very popular and highly actively maintained full-system emulator project – QEMU.
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. Xemu is a free, open-source, and cross-platform Xbox emulator made by Matt Borgerson, continuing much of the work done on XQEMU.