Lime3DS is a project which aims to revive and continue work on Citra, a popular open-source Nintendo 3DS emulator which ceased development.

Changelog:
github.com

Changelog:
Desktop:
– Added configuration options to allow display stretching in Single Screen and Separated Windows layouts
Android:
– In-game sidebar menu can now be controlled with an external gamepad
– Settings interface has been visually overhauled
– Adreno Boost toggle has been added for devices with a supported GPU
– This feature is currently experimental, so use with caution
GitHub - azahar-emu/azahar: An open-source 3DS emulator project based on Citra.
An open-source 3DS emulator project based on Citra. - azahar-emu/azahar