EmuNations

DS4Windows is a portable program that allows you to use a PlayStation DualShock 4 on your PC by emulating a Xbox 360 controller. This project is actually a fork of the work of Jays2Kings, which can be found on the old project website at ds4windows

WinArcadia is a multi-system emulator for the following machines::

• Emerson Arcadia 2001 console family (Bandai, Emerson, Grandstand, Intervision, Leisure-Vision, Leonardo, MPT-03, Ormatu, Palladium, Poppy, Robdajet, Tele-Fever, Tempest, Tryom, Tunix...) (1982)

• Interton VC 4000 console family (Acetronic, Fountain, Hanimex, Interton, Prinztronic, Radofin, Rowtron, Voltmace, Waddingtons...) (c. 1978)

• Elektor TV Games Computer (1979)

• PIPBUG- and  BINBUG-based machines (Electronics Australia 77up2 and 78up5, Signetics Adaptable Board Computer, Eurocard 2650...) (c. 1977-1978)

• Signetics Instructor 50 trainer (1978)

• Central Data 2650 computer (1977)

• Astro Wars, Galaxia, Laser Battle and Lazarian coin-ops by Zaccaria (1979-1981)

• Malzak 1 and 2 coin-ops by Kitronix (c. 1980) 

• Chaos 2 computer (1983)

• Dolphin trainer (1977)

• PHUNSY computer (c. 1980) 

• AY-3-8550/8600-based Pong systems (Coleco Telstar Galaxy, Sheen TVG-201...) (c. 1976-1977)

• Ravensburger Selbstbaucomputer aka 2650 Minimal Computer trainer (1984) 

• MIKIT 2650 trainer (1978) 

• VTech Type-right machine (1985)

Features include ReAction GUI, load/save snapshots, windowed and full-screen modes, CPU tracing, trainer, drag and drop support, graphics scaling, automatic load/save of configuration/game, keyboard/joystick/ gamepad/paddle/mouse/trackball support, autofire, turbo mode, gameplay recording/playback, PAL/NTSC modes, sprite demultiplexing, help windows, source code, debugger, frame skipping, redefinable keys, save screenshots (4 supported formats), ARexx port, network play, real-time monitor, locale support, game selection sidebar, text-to-speech, printer output, undithering, support for ZIPped games, clipboard support, palette editor, tone retuning, high score management, force feedback, sprite editor, 3D.

MEKA is a multi-machine emulator for MS-Windows and GNU/Linux (older versions support MS-DOS). It's known for emulating the Sega 8-bit systems very well and support the following machines:

• Sega Game 1000 (SG-1000)

• Sega Computer 3000 (SC-3000)

• Sega Super Control Station (SF-7000)

• Sega Mark III (+ FM Unit)

• Sega Master System (SMS)

• Sega Game Gear (GG)

• ColecoVision (COLECO)

• Othello Multivision (OMV)

Along with a wide range of peripherals and exotic games support, it also includes a debugger and various debugging/hacking tools.

86Box (formerly known as PCem Unofficial, PCem Experimental, or PCem-X) is an unofficial branch of the PCem emulator, which aims to run older operating systems and software designed for IBM PC systems and compatibles from 1981 through fairly recent system designs based on the PCI bus.

Features include but are not limited: Low level emulation of 8086-based processors up to the Pentium with focus on accuracy, Great range of customizability of virtual machines such as the very first IBM PC 5150 from 1981, or the more obscure IBM PS/2 line of systems based on the Micro Channel Architecture, Lots of supported peripherals including video adapters, sound cards, network adapters, hard disk controllers, and SCSI adapters and much more!

It is also recommended to use a manager application with 86Box for easier handling of multiple virtual machines:

• 86Box Manager - It's an optional configuration manager to create and edit multiple isolated virtual machines while running at the same time and much more...

EmulationStation Desktop Edition is an open source frontend application for browsing and launching games from your multi-platform game collection. It comes preconfigured for use with RetroArch and a number of other emulators. It's also fully customizable so you can expand it to launch other emulators or applications. It has several features such as minimal setup, full controller support, very customizable, Built-in scraper for downloading game info and game media, fully themeable and much more...

QEMU is an open source machine emulator and virtualizer.
When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performance. 

Ludo is a minimalist frontend  launcher for most non-GL libretro cores and is written in go. It offers certain quality of life features like browsing game collections categorized by system with playlists showing in-game screenshots wrapped in a minimalist design. Also provides contextual menu which give you access to actions including quick save and quick load.

A Vulkan-based translation layer for Direct3D 9/10/11 which allows running 3D applications on Linux using WINE.

Launchbox is a front-end wrapper for emulators. Not only does it automatically download box art for games, it also grabs fanart, screenshots, logos and more to create an immersive experience via BigBox.

It also supports arranging and filtering by genre, platform, ESRB rating, developer, publisher, genre, etc. It also includes automated import processes for your MS-DOS games, ROM files, and Steam in order to help get you up and running as quickly as possible. Game box-art and metadata can also be automatically downloaded from their Games Database or community-based online databases.

ScummVM allows you to run certain classic graphical point-and-click adventure games by replacing the executables which is why you can play on systems for which they were never designed!

You can find a full list with details on which games are supported and how well on the compatibility page.

SDL 2.0.x (or SDL 1.2.x) is a required Library.

DOSBox-X is a free and cross-platform DOS emulator for running DOS games and programs. Started as a fork of the DOSBox project, it retains compatibility with the wide base of DOS games and DOS gaming DOSBox was designed for. But it's also a platform for running DOS applications, including emulating the environments to run Windows 3.x, 9x and ME and software written for those versions of Windows. DOSBox-X aims to be a complete DOS emulation package that is both fully-featured and easy to use, covering all pre-2000 DOS and Windows 9x based system scenarios. 

While they have made efforts to maintain and improve the emulation accuracy of the hardware and many more ways to configure the DOS virtual machine, they also try to strike a balance between emulation quality, speed, and usability, including improving the out-of-the-box experience for new users who want to run DOS programs or games, as well as implementing emulation that is accurate enough to make retro-programming possible with confidence the program will run properly on actual hardware.

DSP is an open-source emulator which emulates multiple arcade machines, Spectrum, Phoenix, CPC, Colecovision and more..