Citra 3DS Emulator
December 23, 2014 Update
Citra is an open-source Nintendo 3DS emulator written in modern C++. It is written with portability in mind, with builds actively maintained for Windows, Linux and OS X. Citra only emulates a subset of 3DS hardware, and therefore is generally only useful for running/debugging homebrew applications. At this...Citra - New 3DS Emulator