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

PCSX2 - The Playstation 2 Emulator

Core module of the Mupen64Plus project

A collection of CHIP-8 programs and documentation

An effort to standardise on a file format for CHIP-8 and friends

A Go implementation of Chip-8, SCHIP and XO-Chip for WebAssembly

Emma 02 - RCA CDP 1802 Multi-system Emulator

A very basic CHIP-8 emulator and assembler in Javascript

MAME

Emulator of x86-based machines.

Original Xbox Emulator for Windows, macOS, and Linux (Active Development)

bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.

the MSX emulator that aims for perfection

JavaScript RISC-V ISA Simulator. Boots linux in a web-browser.