Browse free open source Emulators and projects 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: 14,341 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: 4,211 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: 2,424 This Week
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  • 4
    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: 2,514 This Week
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  • 5
    Nestopia
    A portable and cycle-accurate NES/Famicom emulator written in C++
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    Downloads: 2,599 This Week
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  • 6
    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: 2,029 This Week
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  • 7
    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: 1,913 This Week
    Last Update:
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  • 8
    Wine

    Wine

    Run Windows applications on Linux, BSD, Solaris, and Mac OS X

    Wine is an Open Source implementation of the Windows API on top of X and Unix. Wine provides both a development toolkit for porting Windows sources to Unix and a program loader, allowing many unmodified Windows binaries to run on x86-based Unixes.
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    Downloads: 1,157 This Week
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  • 9
    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: 245 This Week
    Last Update:
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  • 10
    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: 895 This Week
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  • 11
    Limbo PC Emulator

    Limbo PC Emulator

    PC Emulation for Android

    2024-11-08 This project is abandoned. It's kept up for archival reasons, as part of a passion to keep software available. From the looks of things, the original developer has resumed work on it, we strongly suggest visiting the GitHub page for it --- Limbo PC Emulator is a QEMU-based emulator, enabling users to run various operating systems on their devices. Copyright (c)2012 Max Kastanas, reuploaded for archival once Google Code went offline.
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    Downloads: 1,007 This Week
    Last Update:
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  • 12
    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: 602 This Week
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  • 13
    shadPS4

    shadPS4

    PS4 emulator for Windows,Linux,MacOS

    shadPS4 is an early PlayStation 4 emulator for Windows, Linux, and macOS written in C++. If you encounter problems or have doubts, do not hesitate to look at the Quickstart. To verify that a game works, you can look at shadPS4 Game Compatibility. To discuss shadPS4 development or suggest ideas, join the Discord server. To get the latest news, go to our X (twitter) or our website.
    Downloads: 102 This Week
    Last Update:
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  • 14
    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: 466 This Week
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  • 15

    VisualBoyAdvance

    An emulator for Gameboy and GameboyAdvance systems

    An emulator for Gameboy and GameboyAdvance systems.
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    Downloads: 434 This Week
    Last Update:
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  • 16
    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: 340 This Week
    Last Update:
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  • 17
    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: 1,127 This Week
    Last Update:
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  • 18
    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: 361 This Week
    Last Update:
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  • 19
    CDemu - a virtual CD/DVD drive for Linux
    CDemu - a virtual CD/DVD drive for Linux. Project includes Linux kernel module & userspace utilities.
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    Downloads: 391 This Week
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  • 20
    Denise

    Denise

    C64/Amiga emulator with 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 emulates an C64, Amiga 500 and Amiga 1000. RetroArch SLANG shaders are supported by Denise. 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: 313 This Week
    Last Update:
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  • 21
    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: 65 This Week
    Last Update:
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  • 22
    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: 63 This Week
    Last Update:
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  • 23
    Lemuroid

    Lemuroid

    All in one emulator on Android!

    Lemuroid is an open-source emulator based on Libretro. It's designed to work on a wide range of devices, from phones to TVs, and to provide the best user experience on Android. It's completely free and without ads. Keep in mind not every device can emulate every console. A very powerful one is required for more recent systems such as PSP and DS and 3DS. This application does not contain any games. You need to provide your own legally owned ROM files. It originated from a rib of Retrograde, but graduated to a standalone project integrating LibretroDroid.
    Downloads: 51 This Week
    Last Update:
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  • 24
    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: 44 This Week
    Last Update:
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  • 25

    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: 247 This Week
    Last Update:
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Open Source Emulators Guide

Open source emulators are programs that can mimic the hardware and software of another system. This allows users to run different operating systems and software on their own computer, or even an entirely different machine. Open source emulators are a cost-effective way of accessing vintage or obscure systems, as they don’t require original hardware or expensive software licenses.

The open source emulator is often compared to virtualization software such as VirtualBox and VMware Workstation, but there are key differences. While virtualization emulates the entire physical machine within its own environment, a good open source emulator focuses on recreating the exact specifications of a single piece of hardware - no more, no less. As such, it requires more detailed programming logic than virtualization does.

The most popular open source emulation suites are DOSBox (for MS-DOS) and VisualBoy Advance (GameBoy Advance). However, there’s an enormous range of other options out there for both home computers and consoles from all eras - from 80s 8-bit machines such as the ZX Spectrum to modern ones like PlayStation 3. Once you have these up and running, you can dive into an extensive library of classic games with your favorite console controllers or keyboards.

Open source emulators also come in handy if you need to debug old applications written specifically for a certain platform – you can use them to replicate the conditions in which they were originally developed without having to buy special vintage hardware. Plus, because they’re free & open source – programmers can easily get involved in developing them further & adding new features over time if desired.

Open Source Emulators Features

  • Platform Compatibility: Open source emulators provide compatibility for multiple hardware platforms and gaming consoles, allowing users to play different console games on the same machine.
  • Internal Functions: They offer a variety of internal functions such as game rewinds, save states, cheat codes, and other customization options.
  • Improved Graphics: Emulators can improve the visual quality of older games by applying more modern graphic processing technologies to them. This can be especially useful for playing classic titles that were released before high-definition graphics became available.
  • Crossplay Support: Many open source emulators are designed to facilitate crossplay between different platforms. This allows players from different systems to play together in online multiplayer environments.
  • Usage with ROMs: For most open source emulators, it's possible to use ROMs (digital copies) of software rather than the actual physical media that the game was originally released on. This makes it easier to access old titles and to preserve them for future generations.
  • Modifiable Source Code: The source code for these programs is openly accessible and modifiable; this means that anyone can modify the program in order to better suit their individual needs or preferences without having to make changes outside of the emulator itself.

Different Types of Open Source Emulators

  • Console (Console System) Emulators: These are used to play games from classic console systems such as the Nintendo Entertainment System, Super Nintendo, Gameboy, PlayStation and Xbox. Console emulators replicate the hardware and software of older consoles on a modern computer system.
  • Arcade (Coin-Op) Emulators: These are used to run arcade machine games from titles like Street Fighter II and Pac-Man. Arcade emulators can be used to preserve vintage programs for new generations of gamers who would otherwise be unable to access these classic titles.
  • Handheld Device Emulators: These are designed to emulate handheld gaming devices such as the Nintendo DS or Sony PSP on PCs and mobile phones.
  • Homebrew (Non-Retail) Application Emulator: This emulator is designed specifically for running homebrew applications that were not released by major game retailers. Homebrew refers to video games which are individually programmed by hobbyists instead of licensed developers.
  • Software Development Kit (SDK) Emulator: This type of emulator is mostly used by programmers who want to test and debug their own code without having an actual device available with them. SDKs typically include an official set of tools that allow users to create applications or modify existing ones for a particular platform or system environment .

Advantages of Open Source Emulators

  1. Cost Savings: Open source emulators are free software, meaning they can be downloaded and used at no cost. This makes them ideal for users on tight budgets who don’t want to invest in expensive gaming consoles or PC hardware and software.
  2. Accessibility: Open source emulators are available for download from numerous websites, allowing gamers to access a wide range of games without having to purchase them all separately. Additionally, many open source emulator communities also provide support and tutorials that help new users learn how to set up and use their system effectively.
  3. Flexibility: With open source emulators, users have complete control over the configuration and customization of their gaming setup. For example, they can adjust audio settings such as volume and create custom controller setups for different games. They can also customize graphics options so that games look better on lower-end systems with limited resources.
  4. Compatibility: Many open source emulators are designed to run multiple types of game ROMs (files containing game data) from older consoles like Nintendo 64 or Sega Dreamcast as well as newer ones like Sony Playstation 2 or Xbox 360; this means that gamers can play almost any game they desire without needing separate software for each system type/era.
  5. Regular Updates: The availability of regular updates ensures that bugs are fixed quickly while new features are added periodically; this keeps open source emulators current with the latest trends in gaming technology while ensuring greater reliability compared to PC hardware solutions which may require more manual maintenance work by the user over time.

Who Uses Open Source Emulators?

  • Gamers – Users who like playing video games and use open source emulators to enable them to play classic titles that may no longer be available commercially.
  • Programmers – Users who are interested in reverse engineering existing code and using the open source emulator platform as a basic foundation to build modifications or entirely new applications to improve the gaming experience.
  • Developers – These users are interested in developing their own software and apps that work with open source emulators, creating plugins and additional features for gamers.
  • Hobbyists - People who enjoy tinkering with software and hardware and like toy around with different tools such as open-source emulators for fun.
  • Retro Gamers – Players of classic titles or those looking for a nostalgic experience from their childhood often enjoy using open-source emulators so they can play their favorite classic games once again.
  • Researchers – These people use open source emulation systems to investigate how computer hardware works, usually in an educational setting but sometimes also for research purposes.
  • Makers - Frequently working on do-it-yourself technology projects, makers may use open source emulation when testing or constructing applications/devices related to gaming or other specific areas of interest.

How Much Do Open Source Emulators Cost?

Open-source emulators are completely free. This means that anyone can download and use them without paying anything or signing up for a membership. Open source emulators allow users to play retro games on their computers, game consoles, or mobile devices without having to buy the original hardware. Open source emulators also allow users to customize the gaming experience and modify existing games by adding new features such as enhanced graphics, extra levels, or modding tools. The open source nature of these emulators allows developers to make changes quickly and easily so that the emulator keeps up with current trends in gaming technology. In many cases, open source emulation projects provide support for a wide range of hardware options such as Windows PCs, Macs, Linux systems, Android phones and tablets, Raspberry Pis and more. Furthermore, most open-source emulators are regularly updated with bug fixes and improvements from developers all over the world who are passionate about preserving classic video games. With access to all of this amazing technology at no cost whatsoever, it’s easy to see why open source emulation is becoming so popular among gamers of all ages.

What Do Open Source Emulators Integrate With?

Software that can integrate with open source emulators can come in a variety of forms. Video game-focused software such as game engines, user interfaces, and other media creation/editing software are all great examples as they allow for the development, modification and adjustment of video games using open source resources. Additionally, various emulation programs for systems like PlayStation or Xbox can be integrated with open source emulators to provide more depth and options for customizing one’s gaming experience. Programs such as debuggers and profilers may also be included to provide deeper insights into how a particular emulator works. All these types of software enable users to customize their experience beyond what is typically available from closed-source platforms.

What Are the Trends Relating to Open Source Emulators?

  1. Open source emulators are increasingly popular due to their ability to replicate a variety of different hardware configurations, allowing users to test software on different platforms without having to purchase multiple hardware devices.
  2. Open source emulation has allowed for the development of full-featured, modern emulators such as Dolphin, PCSX2, and Citra. These emulators provide high-quality emulation capabilities for a range of console systems including the Nintendo Wii, PlayStation 2, and Nintendo 3DS respectively.
  3. Open source emulators have also seen an increase in popularity due to their flexibility and cost-effectiveness. Many developers are using open source emulators to develop prototypes and test applications without having to invest in expensive hardware or licensing fees.
  4. Additionally, open source emulators can be used to create virtual environments and simulate different scenarios, making them useful for IT professionals who need to test new software or troubleshoot problems before deploying it on actual hardware.
  5. Finally, open source emulators have also become popular among gamers and hobbyists who want to experience classic games in their original form or modify them for their own purposes.

Getting Started With Open Source Emulators

Open source emulators can be a great way to experience different games and operating systems, without having to buy the hardware. To get started using open source emulators, it’s helpful to have some basic knowledge of computers and software.

First, decide which system you want to emulate. You can browse online for the most commonly used open-source emulator formats, such as MAME and RetroPie. Once you’ve found an appropriate format for your project, research how to download the proper files (such as BIOS files). Be sure that you are legally downloading these files, since some may require purchasing or licensing.

Next, you will need a program in which to run your chosen emulator and set up the necessary components within it. There are several free applications available for downloading onto PCs and Macs – such as RetroArch – but be aware that these programs may require advanced tech knowledge in order to use them correctly. After establishing your emulation environment with the right settings, double check that all components have properly been uploaded before attempting any further action with your emulator of choice.

Once everything is installed, you can start running games on your system. Make sure to update your emulators every once in a while so they stay up-to-date with new versions; this helps keep things running smoothly when playing games or executing other tasks on your emulator of choice. With patience and practice comes mastery – so don’t give up if something doesn't work right away. Good luck navigating open source emulators; happy gaming.