Browse free open source Emulators and projects for Windows below. Use the toggles on the left to filter open source Emulators by OS, license, language, programming language, and project status.

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  • 1
    PrimeOS
    PrimeOS, the ideal Android based OS for mobile games on PC/Laptop.
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    Downloads: 14,548 This Week
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  • 2
    GNS3

    GNS3

    An advanced network simulator to design and configure virtual networks

    Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware.
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    Downloads: 4,756 This Week
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  • 3
    VICE

    VICE

    Versatile Commodore Emulator

    VICE is an emulator collection which emulates the C64, the C64-DTV, the C128, the VIC20, practically all PET models, the PLUS4 and the CBM-II (aka C610). It runs on Unix, MS-DOS, Win32, OS/2, Acorn RISC OS, BeOS, QNX 6.x, Amiga, GP2X or Mac OS X machines.
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    Downloads: 2,821 This Week
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  • 4
    DeSmuME

    DeSmuME

    DeSmuME is a Nintendo DS emulator

    DeSmuME is the most seasoned open source Nintendo DS emulator. It sports tools designed for hackers, speedrunners, youtubers, and casual gamers. Homebrew programs are supported and can even be debugged through GDB. The Windows and OSX versions are both relatively feature rich, and there is a small universe of forks and mods that add even more features for casual gaming. DeSmuME is the origin of RetroArch and OpenEmu Nintendo DS support and is used by several mobile Nintendo DS emulators, with the notable exception of DraStic. DeSmuME's source code is now hosted at https://github.com/TASVideos/desmume/ win32 autobuilds @ https://ci.appveyor.com/project/zeromus/desmume/build/artifacts
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    Downloads: 2,625 This Week
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  • 5
    Nestopia
    A portable and cycle-accurate NES/Famicom emulator written in C++
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    Downloads: 2,839 This Week
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  • 6
    Null-modem emulator

    Null-modem emulator

    The virtual serial port driver for Windows.

    The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.
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    Downloads: 2,582 This Week
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  • 7
    Bochs x86 PC emulator
    Bochs is a portable x86 PC emulation software package that emulates enough of the x86 CPU, related AT hardware, and BIOS to run Windows, Linux, *BSD, Minix, and other OS's, all on your workstation.
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    Downloads: 1,514 This Week
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  • 8
    Locale Emulator

    Locale Emulator

    Yet another system region and language simulator

    Locale Emulator is a tool similar to AppLocale and NTLEA, providing a simulation function that can make an application recognize your OS as in a language other than the real one. It is quite useful when you are trying to play country-specific games. Locale Emulator is compatible with the following systems, both 32 and 64-bit, Windows 7 with Service Pack 1, Windows 8.1, and Windows 10. Locale Emulator supports 32-bit executables running on both 32-bit or 64-bit systems. For example, if you are using 64-bit WinRAR, you will not see the context menu on a RAR file unless you swapped 64-bit WinRAR with the 32-bit version. Clone the repo using Git, install Microsoft Visual Studio 2015 / 2017, open LocaleEmulator.sln, perform build action, clone and build the core libraries, and copy LoaderDll.dll and LocaleEmulator.dll from Locale-Emulator-Core to Locale-Emulator build folder.
    Downloads: 277 This Week
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  • 9
    D-Fend Reloaded

    D-Fend Reloaded

    A graphical environment for DOSBox

    D-Fend Reloaded is a graphical environment for DOSBox. D-Fend Reloaded is a successor of the discontinued D-Fend. Both environments look alike and D-Fend Reloaded contains all features of D-Fend. Even the D-Fend config files can be used.
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    Downloads: 939 This Week
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  • 10
    Citra

    Citra

    A Nintendo 3DS Emulator

    Citra is an experimental open-source Nintendo 3DS emulator/debugger written in C++. It is written with portability in mind, with builds actively maintained for Windows, Linux and macOS. Citra emulates a subset of 3DS hardware and therefore is useful for running/debugging homebrew applications, and it is also able to run many commercial games! Some of these do not run at a playable state, but we are working every day to advance the project forward. (Playable here means compatibility of at least "Okay" on our game compatibility list.) Citra is licensed under the GPLv2 (or any later version). Refer to the license.txt file included. Please read the FAQ before getting started with the project. If you want to contribute please take a look at the Contributor's Guide and Developer Information. You should also contact any of the developers in the forum in order to know about the current state of the emulator because the TODO list isn't maintained anymore.
    Downloads: 205 This Week
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  • 11
    ZSNES is a SNES/Super Famicom emulator for x86 computers. It runs on Windows, MS-DOS and Linux/FreeBSD and supports mode 7, sound, Super FX, and a lot more.
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    Downloads: 473 This Week
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  • 12
    KernelEx is an Open Source compatibility layer with an aim to allow running Windows 2000/XP-only applications on Microsoft Windows 98 and Microsoft Windows Millennium operating systems.
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    Downloads: 499 This Week
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  • 13
    The Free Unix Spectrum Emulator (Fuse): an emulator of the 1980s home computer and various clones for Unix, Mac OS X and Windows.
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    Downloads: 559 This Week
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  • 14
    Phoenix OS

    Phoenix OS

    An alternative way of running Android OS on a Windows system

    Phoenix OS is an Android emulator and operating system that allows you to run Android apps and games on your Windows desktop. It's a free, lightweight desktop environment that includes a taskbar, desktop icons, file management, and multi-window support. Phoenix OS is designed to provide a desktop-like experience on a larger screen. It supports both Intel and AMD processors, but it's more compatible with Intel processors. You can install Phoenix OS to replace Windows or install it alongside Windows in a dual-boot setup. Phoenix OS is a fork of the popular Remix OS. It lacks Google Play Services, but you can easily find the apps you need through APK hosting sites.
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    Downloads: 1,244 This Week
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  • 15
    VBA-M (Archived - Now on Github)

    VBA-M (Archived - Now on Github)

    A merge of the original Visual Boy Advance forks

    Project has moved to https://github.com/visualboyadvance-m/visualboyadvance-m
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    Downloads: 331 This Week
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  • 16

    VisualBoyAdvance

    An emulator for Gameboy and GameboyAdvance systems

    An emulator for Gameboy and GameboyAdvance systems.
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    Downloads: 395 This Week
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  • 17
    GPCS4

    GPCS4

    A work-in-progress PlayStation 4 emulator

    A PlayStation 4 emulator which was just started. A project done for fun, and for technical research. The only reason I have started this project is for learning 3D graphics. It's not intended to become a serious application. Support simple compute shader, compute ring, cube maps. For more details you could join our discord server to contact me, or if you are used to Tencent QQ/TIM, just join our group. There you can get more resources which are useful for contributing. To run or develop GPCS4, a CPU supporting AVX instruction set as well as a graphics card supporting Vulkan 1.3 are required.
    Downloads: 61 This Week
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  • 18
    Mininet

    Mininet

    Emulator for rapid prototyping of Software Defined Networks

    Mininet creates a realistic virtual network, running real kernel, switch and application code, on a single machine (VM, cloud or native), in seconds, with a single command. Because you can easily interact with your network using the Mininet CLI (and API), customize it, share it with others, or deploy it on real hardware, Mininet is useful for development, teaching, and research. Mininet is also a great way to develop, share, and experiment with Software-Defined Networking (SDN) systems using OpenFlow and P4. Mininet is actively developed and supported, and is released under a permissive BSD Open Source license. We encourage you to contribute code, bug reports/fixes, documentation, and anything else that can improve the system! Links are virtual ethernet pairs, which live in the Linux kernel and connect our emulated switches to emulated hosts (processes).
    Downloads: 55 This Week
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  • 19
    Panda3DS

    Panda3DS

    HLE 3DS emulator

    Panda3DS is a new emulator for the Nintendo 3DS. It allows fans of the console to enjoy their favorite games with various enhancements and unique features on all their devices, be it a laptop, a desktop, or on the go with a Steam Deck (and phone someday). Welcome to the home site for Panda3DS, a new emulator hoping to bring all sorts of unique features to the 3DS emulation scene, such as support for scripting, various enhancements, support for all sorts of platforms, development tools, and more.
    Downloads: 54 This Week
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  • 20
    86Box

    86Box

    Emulator of x86-based machines based on PCem

    86Box is a low level x86 emulator that runs older operating systems and software designed for IBM PC systems and compatibles from 1981 through fairly recent system designs based on the PCI bus. Easy to use interface inspired by mainstream hypervisor software. Low level emulation of 8086-based processors up to the Pentium with focus on accuracy. Great range of customizability of virtual machines. Many available systems, 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. MIDI output to Windows built-in MIDI support, FluidSynth, or emulated Roland synthesizers. Supports running MS-DOS, older Windows versions, OS/2, many Linux distributions, or vintage systems such as BeOS or NEXTSTEP, and applications for these systems.
    Downloads: 53 This Week
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  • 21
    OpenAuto

    OpenAuto

    AndroidAuto headunit emulator

    OpenAuto is an AndroidAuto(tm) headunit emulator based on aasdk library and Qt libraries. Main goal is to run this application on the RaspberryPI 3 board computer smoothly. The OpenAuto Pro is the most advanced Raspberry Pi-based, custom head-unit solution ready to retrofit your vehicle. The main functionality of the OpenAuto Pro software is to bring Users access to modern head-unit features like Bluetooth Hands-Free Profile, music streaming, integrated media player, navigation via Android Auto, screen mirroring, rear camera support, and many more interesting options and possibilities. Moreover, OpenAuto Pro runs under regular Raspberry PI OS (Buster), therefore You can use all accessories and software dedicated to Raspberry Pi. OpenAuto Pro version provides features like brightness control, volume control, support of Kodi and integration with the Raspberry PI OS (Raspbian Desktop).
    Downloads: 47 This Week
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  • 22

    nestopiaue

    Nestopia UE

    This project is a fork of the original Nestopia source code, plus the Linux port. The purpose of the project is to enhance the original, and ensure it continues to work on modern operating systems.
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    Downloads: 266 This Week
    Last Update:
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  • 23
    Denise

    Denise

    C64/Amiga emulator with PAL shader and runAhead

    Denise is a cycle accurate and platform independant C64 / Amiga emulator. My motivation for this project is understanding how it works and write clean and easy readable code. Denise now emulates an Amiga 500 and Amiga 1000. Features already known from the C64 emulation, such as runAhead, savestates, drive sounds, PAL encoding, dynamic rate control, G-Sync/FreeSync, Warp, just in time polling are also available for the Amiga. Denise supports REU, GeoRam, EasyFlash, EasyFlash³, Gmod2, Retro Replay, Action Replay, Final Cartridge, Light Guns/Pens, GunStick, Mouse 1351, Mouse Neos, Paddles, fast loaders such as ProfDOS, PrologicDOS, DolphinDOS, ProSpeed 1571, Turbo Trans, 1571 floppy, drag'n'drop and command line support. Denise consists of 4 main modules. "guikit", "driver", "emulation" could be used in any other project. "program" links these modules together. GIT repo: https://bitbucket.org/piciji/denise/src/master/
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    Downloads: 193 This Week
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  • 24
    An open source NES Emulator for Windows and Unix that features solid emulation accuracy and state of the art tools for power users. FCEUX's source code is now hosted at https://github.com/TASVideos/fceux/ win32 autobuilds @ https://ci.appveyor.com/project/zeromus/fceux/build/artifacts
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    Downloads: 252 This Week
    Last Update:
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  • 25
    This is Java 2 Micro Edition (J2ME) CLDC/MIDP Emulator. Allows demonstrate MIDlet based applications in web browser applet, also can be run as standalone java application.
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    Downloads: 169 This Week
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