Citra is described as 'An experimental open-source Nintendo 3DS emulator/debugger written in C++. At this time, it only emulates a very small subset of 3DS hardware, and therefore is only useful for booting/debugging very simple homebrew demos. Citra is licensed under the GPLv2. Refer to the license' and is a Game Emulator in the gaming software category. There are more than 10 alternatives to Citra for a variety of platforms, including Windows, Linux, Android, Mac and iPhone apps. The best Citra alternative is RetroArch, which is both free and Open Source. Other great apps like Citra are Azahar, Antstream Arcade, KRetro and Panda3DS.