emu8051 is a simulator of the 8051/8052 microcontrollers.

FCEUX is a Nintendo Entertainment System (NES), Famicom, Famicom Disk System (FDS), and Dendy emulator. It supports NTSC (USA/JPN), PAL (European), and NTSC-PAL Hybrid modes. It also offers tools for debugging, rom-hacking, map making, Tool-assisted movies, and Lua scripting.

Beetle PSX is a port/fork of Mednafen's PSX module to the libretro API. Additional features include PBP/CHD file format support, high-resolution software rendering, OpenGL and Vulkan renderers, and PGXP perspective correct texturing. For those seeking improved visuals and performance, Beetle PSX HW provides a hardware-accelerated alternative with its OpenGL and Vulkan renderer.

ZSNES is a Super Nintendo Entertainment System emulator that can play most games at full speed with sound and special graphic filters. Some of its features include:

• Support for smooth and dynamic image scaling

• Support for rewinding and fast-forwarding in-game

• JMA compression format

• Change the appearance of the GUI

• Take screenshots of currently running games

• Saving the game at any point by recording the console’s state

• Record movies of gameplay which can be played back.

This package provides a collection of Vulkan GLSL (.slang) shaders for use with RetroArch.

Beetle PSX is a port/fork of Mednafen's PSX module to the libretro API. Additional features include PBP/CHD file format support, high-resolution software rendering, OpenGL and Vulkan renderers, and PGXP perspective correct texturing. For those seeking improved visuals and performance, Beetle PSX HW provides a hardware-accelerated alternative with its OpenGL and Vulkan renderer.

This program compresses files in a way that tries to be as efficient as possible but still allows them to be decompressed in environments where CPU speed and RAM are limited. It also generate a self-extractor for use on a Commodore C64, C128 etc.

Stella is a multi-platform Atari 2600 VCS emulator, released as Free Software. Enjoy all of your favorite Atari 2600 games on your PC thanks to Stella!

This is the libretro port of the Nestopia emulator, based on the de facto upstream Nestopia JG fork, which lives at: https://gitlab.com/jgemu/nestopia. The libretro port contains an additional overclocking feature.

Cega is a cycle accurate emulator for the Sega SG-1000, Master System, and Game Gear written specifically for The Jolly Good API. Mega Drive emulation is in an experimental state.

This package provides joypad autoconfig files for RetroArch, the reference frontend for the libretro API. The autoconfig files are used to recognize input devices and automatically setup default mappings between the physical device and the RetroPad virtual controller.

Dolphin is an emulator for two Nintendo video game consoles: the GameCube and the Wii. It provides compatibility with all PC controllers, turbo speed, networked multiplayer, and graphical enhancements.

This package contains a MIPS CPU emulator. The simulator accepts ELF statically linked executables compiled for 32-bit big-endian MIPS target, targeting mips-linux-gnu or mips-elf.

Libretro is a simple but powerful development interface that allows for the easy creation of emulators, games and multimedia applications that can plug straight into any libretro-compatible frontend. RetroArch is the official reference frontend for the libretro API, currently used by most as a modular multi-system game/emulator system.

Gens/GS is an emulator for the Mega Drive (also known as Sega Genesis), derived from Gens. Project goals include clean source code, combined features from various forks of Gens, and improved platform portability.

bsnes is a Super Nintendo / Super Famicom emulator that focuses on performance, features, and ease of use.

RetroArch incorporates a ROM scanning system to automatically produce playlists. Each ROM that is scanned by the playlist generator is checked against a database of ROMs that are known to be good copies. The various directories contain:

cht

Cheat codes for various games

cursors

Methods for querying the playlists

dat

Customized DAT files, maintained by the libretro team

metadat

Different metadata and third-party DATs available to the system

rdb

The compiled RetroArch database files

scripts

Various scripts that are used to maintain the database files.

RPCS3 is an emulator and debugger for the Sony PS3.

Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator which is capable of accurately playing many games. This package contains the Z64 RSP processor plugin.

The DOSBox Staging project attempts to modernize DOSBox.

DOSBox emulates an Intel x86 personal computer running an IBM PC compatible disk operating system (DOS) in both real and protected modes. It was primarily designed to run old DOS games, but aims to be fully compatible with all DOS programs and replicate the experience as accurately as possible.

This fork fixes some perceived issues with DOSBox and adds new features such as Wayland support, PowerPC/POWER dynamic recompilation, and FluidSynth MIDI. Other features may be removed: for example, physical CDs can no longer be played, only emulated media.

Graphical emulation includes contemporary text mode, Hercules, CGA, EGA, VGA, VESA, S3 Trio 64, and Tandy hardware.

Emulated legacy sound devices range from a rudimentary `PC speaker' buzzer to the once state-of-the-art Gravis Utrasound sampling sound card. The default is a SoundBlaster 16 providing 16-bit stereo sound. MIDI is forwarded to the host through an emulated MPU-401.

An emulated hardware modem is also included, letting one host or dial a BBS across the Internet, network over IPX, and emulate a serial nullmodem over TCP/IP.

WASM-4 is a low-level fantasy game console for building small games with WebAssembly. Game cartridges (ROMs) are small, self-contained .wasm files that can be built with any programming language that compiles to WebAssembly.

A standalone port of Mednafen’s GameBoy Advance emulator called Beetle GBA to libretro. Beetle GBA is based on VBA-M, itself a fork of Visual Boy Advance.

This package provides the Jolly Good API C and C++ headers. The Jolly Good API is a shared object or plugin API for emulators.

The Jolly Good Reference Frontend (accessible via the jollygood command) aims to be the simplest possible frontend to The Jolly Good API. It may be used to run emulators built as shared objects, or as a "white-label" frontend for statically linked standalone emulators.