Wine - Open Source Software for running Windows applications on other operating systems.
Mupen64Plus - N64 emulator and plugins for Linux, Mac OSX, FreeBSD, and Windows
CodeWeavers CrossOver - Don't buy a Windows license, don't reboot and don't use a Virtual Machine. Try a free trial of CrossOver to run your Windows software on Mac, Linux and Chrome OS.
Project64 - Project64 is a Nintendo 64 emulator for the Windows platform.
PlayOnLinux - PlayOnLinux will allow you to play your favorite games on Linux easily
Corn - Corn is a very fast Nintendo 64 emulator.