EmuNations

Ruffle is a Flash Player emulator written in Rust. Ruffle runs natively on all modern operating systems as a standalone application, and on all modern browsers through the use of WebAssembly and has extensive content compatibility in ActionScript; the language that powers interactivity in games and applications made with Flash.

Users or website owners may install the web version of Ruffle and existing flash content will "just work", with no extra configuration required. It will also detect all existing Flash content and this is an entirely open source project maintained by volunteers.

JoyToKey  enables PC game controllers to emulate the keyboard and mouse input, so that windows applications and web games can be controlled with your joysticks. Whenever buttons and sticks are pressed on the controllers, JoyToKey converts them into keyboard strokes and/or mouse movements so that the target application will work as if a real keyboard and a mouse were used.

AppleWin (also known as Apple //e Emulator for Windows) is an open source 

software emulator for running Apple II programs in Microsoft Windows. 

It support most programs that could run either on the Apple II+ or the Apple IIe. 

For its other capabilities, please check this reference.

Modern fork of x360ce built with SDL3, ViGEmBus, vJoy, Windows MIDI Services, HelixToolkit, .NET 10 WPF, and Fluent Design. Turn any input device into any virtual controller:
Gamepads, joysticks, keyboards, mice, and touchscreens — mapped to Xbox 360, DualShock 4, DirectInput, MIDI, or Keyboard+Mouse output that games treat as real hardware.

MS-DOS Player is a MS-DOS emulator running on Windows (32/64-bit) command prompt. Its 16-bit MS-DOS compatible commands can be executed on Win32/x64 environments.

It basically inherits the environment variables from the host Windows, and a target command can access the host's file path directly. As such, you can execute 16bit MS-DOS compatible commands on your 64bit Windows in the same sence as you did on 32bit Windows, and you do not need to copy any files to/from a virtual machine (VMware, Virtual PC, XP mode, or others).

Note: This emulator DOES NOT support Win16 execution files. It aims to support character user interface utilities, for example file converters, compilers, assemblers, debuggers, and text editors. For now, doesn't support graphic/sound hardwares nor is intended to support game softwares.

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.

Xbox 360 Controller Emulator allows your controller (gamepad, joystick, wheel, etc.) to function as an Xbox 360 controller. For example, it lets you play games such as "Grand Theft Auto" (GTA) or "Mafia II" using a Logitech Wheel.

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...

Utilities

• RetroBat is a software distribution supplied through EmulationStation interface and is fully functional and highly customizable.