Desmume

HLE 3DS emulator

PlayStation 4 emulator for Windows, Linux, macOS and FreeBSD written in C++

PlayStation 3 emulator and debugger

PCSX2 - The Playstation 2 Emulator

Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.

Cemu - Wii U emulator