From WikiTemp, the GBAtemp wiki

cuzebox3DS is a work-in-progress port of CUzeBox to the New 3DS. The original CUzeBox was made by Jubatian.


More info can be found here: https://gbatemp.net/threads/wip-cuzebox3ds-uzebox-emulator-ported-to-new-3ds.518244/

and here: https://github.com/ry755/cuzebox3DS