Note

This article has to be updated. For example, Wine is not an emulator. Only something like QEMU would be an emulator. The others are compatibility layers. (I have done a rudimentary re-organization)

Emulators

Generic

• QEMU

Linux

• Windows Subsystem for Linux 1

Android

• Bluestacks
• Genymotion
• LDPlayer
• Nox
• Remix OS Player
• MSI App Player

Gaming Consoles

See Retro Emulation

Sony Playstation

• PCSX
• PSCX2
• RPCS3

Nintendo

Compatibility Layers

Windows

Windows on UNIX

• Wine
  • Has WINED3D (OpenGL based implementation of Direct3D and DirectDraw from DirectX 1-11)
• Crossover (paid Wine front-end)
• PlayOnLinux (Wine Manager)
• Bottles (Wine Manager)
• Lutris (Wine Games Manager)
• Proton (Steam Compatibility Layer)
• Gallium Nine (Implementation of Direct3D 9)
• DXVK (Vulkan based implementation of Direct3D 9 and DirectX 10-11)
• VKD3D (Vulkan based implementation of Direct3D 12)

UNIX

UNIX on Windows

• Cygwin
• MSYS2

Linux on Windows

• Windows Subsystem for Linux 2

Linux on Chromebook

• Crostini
• Crouton
• Brioche

Linux on FreeBSD

• Linuxulator

Android on Linux

• Anbox
• Waydroid
• ReDroid

Ports

They are re-implementations of platforms which neither emulate, virtualize or run in a compatibility layer. They run on bare metal as operating systems.

Android

• Android-x86
• Remix OS
• Phoenix OS
• Prime OS
• Bliss OS