DeSmuME is a Nintendo DS emulator
GPL-2.0 License
PS3 emulator/debugger
A cross-platform, simple and accurate FC/NES emulator in C++
DS emulator, sorta
Cycle-accurate NES emulator in ~1000 lines of code
Multi-platform emulator of TI Nspire calculators
bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
A Nintendo DS emulator
An NES emulator in C++
Sudachi is a Nintendo Switch emulator for Android, Linux and Windows, written in C++
A Nintendo 3DS Emulator
N64 Emulator
A fast-ish Nintendo DS emulator with a JIT recompiler and multithreading.
Experimental PlayStation Vita emulator
Third-party TI-84 Plus CE / TI-83 Premium CE emulator, focused on developer features
Cemu - Wii U emulator