Tanuki3DS v0.4.0 is released. Tanuki3DS is a 3DS emulator for MacOS and Linux written in C which aims to be simple, fast, and compatible. Currently it can play a handful of games at full speed and supports some nice features like controller support and video upscaling.

Tanuki3DS Changelog:
New graphical frontend made with ImGui
Graphical settings menu so editing config file by hand no longer necessary
Input support for 3DS software keyboard
Keyboard input remapping
Change game language/region
Fullscreen mode
GPU texture/framebuffer viewer
Audio channel viewer
Open recent option
Audio interpolation improvements

Download: Tanuki3DS v0.4.0
Source: Here