Showing 131 open source projects for "custom operating systems"

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  • 1
    Proton-GE-Custom

    Proton-GE-Custom

    Compatibility tool for Steam Play based on Wine

    Proton-GE-Custom is an unofficial compatibility tool for Steam Play that builds on Valve’s Proton and Wine codebases to provide additional patches, fixes, and enhancements for running Windows games on Linux systems through Steam, particularly on Steam Deck and other Linux gaming platforms. Unlike the official Proton builds, this custom fork includes community-developed patches such as media foundation support, raw input improvements, AMD and Nvidia optimizations, and broader compatibility tweaks that help certain games launch and run more reliably or with better performance. ...
    Downloads: 96 This Week
    Last Update:
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  • 2
    Retrobios

    Retrobios

    Complete BIOS and firmware packs for RetroArch, Batocera, Recalbox

    ...The architecture is typically close to bare metal, requiring knowledge of assembly language and hardware interfaces. It may also serve as a foundation for building custom operating systems or experimenting with low-level system design. Overall, retrobios functions as a learning and experimentation platform for understanding foundational computing concepts.
    Downloads: 1,124 This Week
    Last Update:
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  • 3
    RetroBIOS

    RetroBIOS

    Complete BIOS & firmware packs for RetroArch, Batocera, Recalbox, etc.

    RetroBIOS is an open-source project that provides complete BIOS and firmware packs for a wide range of emulators and retro gaming platforms. It includes thousands of verified system files required to run consoles and arcade systems accurately across tools like RetroArch, Batocera, RetroPie, and EmuDeck. Each BIOS file is validated against emulator source code to ensure correctness, compatibility, and proper functionality. The project simplifies setup by offering automated install scripts...
    Downloads: 690 This Week
    Last Update:
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  • 4
    NetherSX2

    NetherSX2

    Continuation of NetherSX2 based on AetherSX2 4248

    NetherSX2-patch is a community-driven continuation and enhancement of the NetherSX2 Android PlayStation 2 emulator, itself a modded fork of the open-source AetherSX2 project originally based on PCSX2. It focuses on providing a more complete and feature-rich experience by applying patches to the upstream emulator build and removing ad-related bloat, fixing notification issues, and exposing many internal settings so users have finer control over performance and compatibility on mobile devices....
    Downloads: 349 This Week
    Last Update:
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  • 5
    Winlator

    Winlator

    Android application for running Windows applications with Wine

    A software that enables users to run Windows applications on Android devices, providing an emulation layer that supports various Windows applications and games.
    Downloads: 1,990 This Week
    Last Update:
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  • 6
    RetroArch

    RetroArch

    RetroArch is a frontend for emulators, game engines and media players.

    RetroArch is a way to run classic games on a wide assortment of Operating Systems and Consoles. Support the Developers on their Patron! https://www.patreon.com/libretro
    Downloads: 27 This Week
    Last Update:
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  • 7
    Xenia

    Xenia

    Xbox 360 Emulator Research Project

    Xenia is an open-source experimental emulator for the Xbox 360 that aims to let users run Xbox 360 games on Windows and other platforms by reverse-engineering the console’s hardware and firmware behavior in software. It implements the 360’s CPU (Xenon), GPU (including Direct3D shader logic), and system libraries to translate Xbox instructions into equivalent host machine operations, enabling many titles to launch and in some cases play at improved frame rates compared with the original...
    Downloads: 27 This Week
    Last Update:
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  • 8
    VirtualBox

    VirtualBox

    Virtualization software for x86_64 hardware

    VirtualBox is a powerful open-source full virtualization software that allows a user to run one or more “guest” operating systems simultaneously inside “virtual machines” on a single physical “host” machine. It supports a wide variety of host platforms (Linux, Windows, macOS, Solaris, etc.) and guest OSes, enabling, for example, running Linux on a Windows PC, running Windows Server on a Linux host, or even legacy OSes in a controlled environment.
    Downloads: 141 This Week
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  • 9
    ipasim

    ipasim

    iOS emulator for Windows

    ipasim (IPA Simulator) is a Windows-based iOS simulator designed to run IPA files directly on Windows without an actual iOS device. It helps developers and testers run iOS apps in a simulated environment.
    Downloads: 75 This Week
    Last Update:
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  • 10
    Eden Emulator

    Eden Emulator

    Free and opensource (FOSS) Switch 1 emulator

    Eden Emulator is an experimental open-source emulator designed to replicate Nintendo Switch hardware with a focus on stability and performance improvements. It builds on modern emulation techniques to deliver smoother gameplay and better compatibility with newer titles. The project emphasizes frequent updates that reduce graphical glitches, improve rendering pipelines, and enhance overall system stability. Eden supports multiple platforms, including desktop and mobile environments, expanding...
    Downloads: 129 This Week
    Last Update:
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  • 11
    Citron Neo

    Citron Neo

    Research software designed to orchestrate virtual environments

    ...It also includes continuous updates that improve compatibility with games and system firmware, reflecting an active development cycle. Citron aims to provide a refined user experience through UI enhancements, faster loading times, and better resource handling. It supports multiple operating systems, including desktop and mobile environments, making it accessible across different devices. Overall, it represents a modern approach to emulation with a focus on speed, compatibility, and extensibility.
    Downloads: 67 This Week
    Last Update:
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  • 12
    Windows 95 in Electron

    Windows 95 in Electron

    Windows 95 in Electron. Runs on macOS, Linux, and Windows

    ...Beyond being a playful trip down memory lane, the project demonstrates how emulation can be packaged using modern frameworks & how legacy operating systems can be encapsulated as distributable desktop experiences. It’s become an example of how software preservation and creative programming can intersect, inspiring others to bring historic systems to life.
    Downloads: 52 This Week
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  • 13
    Play!

    Play!

    Play! - PlayStation2 Emulator

    Play! is an open-source cross-platform emulator for Sony’s PlayStation 2 that aims to run PS2 games on a wide range of modern systems including Windows, macOS, Linux, Android, iOS, and web browsers by implementing core PS2 hardware functionality in software. It emulates primary components like the Emotion Engine CPU and graphics synthesizer, translating game code and hardware calls into host system operations, while providing users with controls to load disc images, manage states, and...
    Downloads: 36 This Week
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  • 14
    Pegasus Frontend

    Pegasus Frontend

    A cross platform, customizable graphical frontend

    Pegasus Frontend is a highly customizable, cross-platform graphical launcher designed to manage and organize game libraries while providing a unified interface for launching emulators. It acts as a frontend layer that aggregates multiple emulators into a single cohesive environment, simplifying the user experience for retro gaming and multi-system setups. The software is built with performance and flexibility in mind, supporting a wide range of devices including desktops, embedded systems,...
    Downloads: 18 This Week
    Last Update:
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  • 15
    PPSSPP

    PPSSPP

    A cross-platform PSP emulator

    PPSSPP is an open source, cross-platform PSP emulator which allows you to play your PSP games on Android, Windows, Mac or Linux. With PPSSPP you can play your PSP games on your PC in full HD resolution, or play on your tablet for a big-screen mobile gaming experience. PPSSPP enhances the gaming experience in more ways than one. It even upscales some textures that would otherwise be too blurry due to the fact that they were originally made for the small screen. Even on modern Android phones...
    Downloads: 92 This Week
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  • 16
    EmulatorJS

    EmulatorJS

    A web-based frontend for RetroArch

    EmulatorJS is a web-based frontend for RetroArch that allows users to run retro games directly in a browser without requiring local emulator installations. Built using JavaScript and WebAssembly technologies, it provides access to a wide range of console and arcade systems through a unified interface. The project functions as a library or plugin rather than a standalone application, enabling developers to embed emulation capabilities into websites or custom platforms. It offers multiple build versions, including stable, latest, and nightly, allowing users to balance reliability and cutting-edge features depending on their needs. ...
    Downloads: 57 This Week
    Last Update:
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  • 17
    melonDS

    melonDS

    DS emulator, sorta

    melonDS aims at providing fast and accurate Nintendo DS emulation. While it is still a work in progress, it has a pretty solid set of features. Firmware boot (not direct boot) requires a BIOS/firmware dump from an original DS or DS Lite. DS firmwares dumped from a DSi or 3DS aren't bootable and only contain configuration data, thus they are only suitable when booting games directly. DS BIOS dumps from a DSi or 3DS can be used with no compatibility issues.
    Downloads: 33 This Week
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  • 18
    Emupedia

    Emupedia

    The purpose of Emupedia is to serve as a nonprofit meta-resource

    Emupedia is an ambitious open-source web platform and preservation initiative that aims to archive, emulate, and make accessible legacy software, games, and operating systems through a browser-based interface. Rather than focusing on a single emulator, it acts as a meta-layer that integrates multiple emulation technologies into a cohesive virtual desktop experience. The project recreates entire operating system environments, such as Windows 95 and Windows 98, within the browser, allowing users to interact with software as if they were using original hardware. ...
    Downloads: 30 This Week
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  • 19
    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.
    Downloads: 100 This Week
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  • 20
    PCjs Machines

    PCjs Machines

    The original IBM PC and other machine emulations in JavaScript

    ...PCjs also provides curated software collections, including operating systems, applications, and games from the early days of personal computing. Its design emphasizes accessibility and education, enabling users to explore historical systems without requiring specialized hardware or installations. The project also includes tools for embedding emulated machines into web pages, making it useful for documentation and teaching purposes.
    Downloads: 6 This Week
    Last Update:
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  • 21
    ares

    ares

    ares is a cross-platform, open source, multi-system emulator

    ...This makes it particularly valuable for researchers, developers, and preservationists who care about hardware accuracy and maintainability. The emulator supports multiple gaming systems and includes its own custom frameworks for GUI, threading, and hardware abstraction. It also integrates a ROM database and flexible configuration system, enabling users to load and manage game content efficiently. By focusing on clarity and correctness, Ares contributes to the long-term documentation and preservation of legacy systems.
    Downloads: 4 This Week
    Last Update:
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  • 22
    v86

    v86

    x86 PC emulator and x86-to-wasm JIT, running in the browser

    ...Overall, it provides a powerful way to explore operating systems, retro computing, and low-level system behavior directly from a web browser.
    Downloads: 4 This Week
    Last Update:
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  • 23
    AndroidSDK

    AndroidSDK

    Full-fledged Android SDK Docker Image

    AndroidSDK is a Docker-based development environment that provides a complete, portable Android SDK setup for building, testing, and deploying Android applications in a consistent and reproducible way. Instead of installing and configuring the Android SDK locally, developers can run a preconfigured container that includes essential tools such as the SDK, build tools, Gradle, and Kotlin compiler. This approach solves common issues related to environment inconsistency, such as dependency...
    Downloads: 5 This Week
    Last Update:
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  • 24
    Gopher64

    Gopher64

    Highly compatible N64 emulator

    ...It supports homebrew applications alongside commercial titles, making it useful for both players and developers. gopher64 also offers tools like save states and cheat support to extend gameplay flexibility. Built with modern programming practices, it emphasizes maintainability and portability across operating systems. Overall, it is a robust solution for emulating N64 games with enhanced capabilities.
    Downloads: 191 This Week
    Last Update:
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  • 25
    SkyEmu

    SkyEmu

    Game Boy Advance, Game Boy, Game Boy Color, and DS Emulator

    ...It is designed as a low-level emulator that accurately reproduces hardware behavior while still offering a smooth and accessible user experience across a wide range of platforms. The emulator is highly portable, supporting desktop operating systems, mobile devices, and even web browsers through WebAssembly builds. SkyEmu includes advanced visual enhancements such as upscaling shaders, color correction, and screen effects that mimic original hardware displays. It also features extensive debugging tools, making it useful not only for players but also for developers working on homebrew or reverse engineering. ...
    Downloads: 237 This Week
    Last Update:
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