Citra

Sirara is a nintendo 3dsm emulator that can run commercial games at 100% speed for PCs. Plus it can enhance the way of their modest Nintendo resolution past games' graphics.

The emulator can display both screens at the same time, however you can set it to one screen at a time by assigning a button to the options between screens. As far as control, you can use the keyboard or map controls in the external gamepad. You can use touchscreen controls by cursor setting on the point where you want to click.

Sintra Nintendo can run an extensive range of games from the 2D and 3D catalogs, although it is 3D games where it's really burning. It completely converts the game's resolution into this point that you will not even guess even coming from the handheld console. Pokémon Sun and Moon or The Legend of Gelda: A link in the games looks really interesting.

Citra is quite likely to have the best and most advanced Nintendo 3DS emulator out there. An Open-Source Volunteer Project that lets you play your handheld games on desktop machines.
CITRA: Best Nintendo 3DS EMULATOR for PC
The emulation does not stop moving the world. A few days ago, we gave you a review of the Impressive Simu Emulator for the Wii U, today it is a complete functional emulator of Nintendo 3DS for Sistar Turn, Windows and Mac which can run games in 100% and scale the 3D graphics console Many high resolution displays.

Note
The emulator does not include any ROM.

Requirements
Requires a graphic card that supports OpenGL 3.3 and 64bit or higher Windows 7.