The Xbox is a staggering gaming console made by Microsoft. Considering that Xbox uses modified x86 compatible hardware and therefore there are also many applications and emulators that run ON the Xbox, many people have taken advantage of the fact that the Xbox is so similar to a PC to trick others that their emulator was real when in reality it did nothing or was a virus.
Here are some of the download links for the emulators:
I recommend you to check those emulators yourself and not buying the list just like that. Always get used to know your risks in order to prevent you from having a bigger loss than getting an advantage.