Open Source Windows Virtual Machine Software

Virtual Machine Software for Windows

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

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  • 1
    Downloads: 10,261 This Week
    Last Update:
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  • 2
    The LLVM Compiler Infrastructure

    The LLVM Compiler Infrastructure

    Collection of modular and reusable compiler and toolchain technologies

    The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. Despite its name, LLVM has little to do with traditional virtual machines. LLVM began as a research project at the University of Illinois, with the goal of providing a modern, SSA-based compilation strategy capable of supporting both static and dynamic compilation of arbitrary programming languages. Since then, LLVM has grown to be an umbrella project consisting of a number of subprojects, many of which are being used in production by a wide variety of commercial and open source projects as well as being widely used in academic research. Code in the LLVM project is licensed under the "Apache 2.0 License with LLVM exceptions". The LLVM Core libraries provide a modern source- and target-independent optimizer, along with code generation support for many popular CPUs (as well as some less common ones!).
    Downloads: 53 This Week
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  • 3
    Kata Containers

    Kata Containers

    Build a standard implementation of lightweight Virtual Machines (VMs)

    Kata Containers is an open source container runtime, building lightweight virtual machines that seamlessly plug into the container ecosystem. Kata Containers is an open source community working to build a secure container runtime with lightweight virtual machines that feel and perform like containers, but provide stronger workload isolation using hardware virtualization technology as a second layer of defense. Since launching in December 2017, the community successfully merged the best parts of Intel Clear Containers with Hyper.sh RunV and scaled to include support for major architectures including AMD64, ARM, IBM p-series, and IBM z-series in addition to x86_64. Kata Containers also supports multiple hypervisors including QEMU, Cloud-Hypervisor, and Firecracker, and integrates with the containerd project among others.
    Downloads: 42 This Week
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  • 4
    macintosh.js

    macintosh.js

    A virtual Apple Macintosh with System 8, running in Electron

    This is Mac OS 8, running in an Electron app pretending to be a 1991 Macintosh Quadra. It works on macOS, Windows, and Linux. Bear in mind that this is written entirely in JavaScript, so please adjust your expectations. The virtual machine is emulating a 1991 Macintosh Quadra 900 with a Motorola CPU, which Apple used before switching to the PowerPC architecture (Apple/IBM/Motorola) in the mid 1990s. You'll find various games and demos preinstalled, thanks to an old MacWorld Demo CD from 1997. Namely, Oregon Trail, Duke Nukem 3D, Civilization II, Alley 19 Bowling, Damage Incorporated, and Dungeons & Dragons. There are also various apps and trials preinstalled, including Photoshop 3, Premiere 4, Illustrator 5.5, StuffIt Expander, the Apple Web Page Construction Kit, and more.
    Downloads: 20 This Week
    Last Update:
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  • 5
    Windows (Dockur)

    Windows (Dockur)

    Windows inside a Docker container

    This project makes it surprisingly easy to run a Windows environment inside a Docker container by using a QEMU-based virtual machine under the hood. It provides a turnkey image and a simple set of environment variables so you can select Windows editions, control disk persistence, and access the VM via a web-based VNC console or similar remote viewers. Because the VM is wrapped in Docker, you can treat Windows as a disposable, repeatable service: create, snapshot with volumes, tear down, and rebuild with consistent results. The setup bundles sensible defaults for UEFI/OVMF firmware, virtio devices, and automated first-boot behavior to streamline installation. It’s handy for demos, testing, or hosted tooling that truly requires Windows but where you still want container-style workflows and orchestration.
    Downloads: 19 This Week
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  • 6
    Quickemu

    Quickemu

    Quickly create and run optimized Windows, macOS and Linux

    Quickly create and run optimized Windows, macOS, and Linux virtual machines. Quickemu is a wrapper for the excellent QEMU that automatically "does the right thing" when creating virtual machines. No requirement for exhaustive configuration options. You decide what operating system you want to run and Quickemu takes care of the rest. The original objective of the project was to enable quick testing of Linux distributions where the virtual machines and their configuration can be stored anywhere (such as external USB storage or your home directory) and no elevated permissions are required to run the virtual machines.
    Downloads: 18 This Week
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  • 7
    TiEmu is an emulator of Texas Instruments hand-helds (TI89/92/92+/V200) for Linux & Windows written with GTK. Full-featured with a graphical debugger.
    Leader badge
    Downloads: 91 This Week
    Last Update:
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  • 8

    X10

    Performance and Productivity at Scale

    X10 is a class-based, strongly-typed, garbage-collected, object-oriented language. To support concurrency and distribution, X10 uses the Asynchronous Partitioned Global Address Space programming model (APGAS). This model introduces two key concepts -- places and asynchronous tasks -- and a few mechanisms for coordination. With these, APGAS can express both regular and irregular parallelism, message-passing-style and active-message-style computations, fork-join and bulk-synchronous parallelism. Both its modern, type-safe sequential core and simple programming model for concurrency and distribution contribute to making X10 a high-productivity language in the HPC and Big Data spaces. User productivity is further enhanced by providing tools such as an Eclipse-based IDE (X10DT). Implementations of X10 are available for a wide variety of hardware and software platforms ranging from laptops, to commodity clusters, to supercomputers.
    Leader badge
    Downloads: 360 This Week
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  • 9
    OpenMausBot

    OpenMausBot

    Open Source Alternative to Grok Bot with a virtual machine

    OpenMausBot is an open-source, local-first desktop app that presents AI agents as a roster of chat contacts. Each bot can have its own personality, model, conversation memory, computer, and connected apps. Bots can run through locally installed Claude, Codex, or Grok command-line agents while using the user's existing logins and subscriptions. A local harness server owns the agent processes and stores transcripts, keys, and events on the user's machine. Agents can work through cloud Linux desktops, isolated local virtual machines, or supported host-control modes, with risky actions surfaced for user approval. The app also supports connected services, per-bot model switching, separate channels, portable team packages, voice interaction, and live views of agent activity.
    Downloads: 13 This Week
    Last Update:
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  • 10
    Packer

    Packer

    Build Automated Machine Images

    Packer is an open source, automated machine image creation tool. It is designed to create any type of machine image for multiple platforms from a single source configuration. Lightweight yet modern, Packer encourages the use of automated scripts to install and configure the software within your Packer-made images. It is highly performant, able to run on every major operating system and create machine images for several platforms in parallel. Packer supports a great number of platforms out of the box, and support for other platforms can be added through plugins. Any image it creates can also be easily turned into Vagrant boxes.
    Downloads: 11 This Week
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  • 11
    Jasmin is a Java Assembler. It takes ASCII descriptions for Java classes, written in a simple assembler-like syntax. It converts them into binary Java .class class files suitable for loading into a Java Virtual Machine implementation.
    Leader badge
    Downloads: 159 This Week
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  • 12
    X11-Basic

    X11-Basic

    A BASIC interpreter and compiler with graphics.

    X11-Basic is a dialect of the BASIC programming language with graphics capability that integrates features like shell scripting, cgi-Programming and full graphical visualisation into the easy to learn basic language on modern computers.
    Leader badge
    Downloads: 61 This Week
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  • 13
    Docker-OSX

    Docker-OSX

    Run macOS VM in a Docker! Run near native OSX-KVM in Docker

    Run Mac OS X in Docker with near-native performance! X11 Forwarding. iMessage security research! iPhone USB working! macOS in a Docker container.
    Downloads: 9 This Week
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  • 14
    open-vm-tools
    The open-vm-tools project provides a suite of open source virtualization utilities and drivers to improve the functionality and user experience of virtualization. The project currently runs in guest operating systems under VMware virtualization.
    Downloads: 42 This Week
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  • 15
    LXD

    LXD

    Powerful system container and virtual machine manager

    LXD is a next-generation system container and virtual machine manager. It offers a unified user experience around full Linux systems running inside containers or virtual machines. LXD is image based and provides images for a wide number of Linux distributions. It provides flexibility and scalability for various use cases, with support for different storage backends and network types and the option to install on hardware ranging from an individual laptop or cloud instance to a full server rack. When using LXD, you can manage your instances (containers and VMs) with a simple command line tool, directly through the REST API or by using third-party tools and integrations. LXD implements a single REST API for both local and remote access. The LXD project was founded and is currently led by Canonical Ltd with contributions from a range of other companies and individual contributors.
    Downloads: 6 This Week
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  • 16
    AutomatedLab

    AutomatedLab

    Framework that lets you deploy complex labs on HyperV and Azure

    AutomatedLab is a provisioning solution and framework that lets you deploy complex labs on HyperV and Azure with simple PowerShell scripts. It supports all Windows operating systems from 2008 R2 to 2019, some Linux distributions and various products like AD, Exchange, PKI, IIS, etc. AutomatedLab (AL) enables you to setup test and lab environments on Hyper-v or Azure with multiple products or just a single VM in a very short time. There are only two requirements you need to make sure: You need the DVD ISO images and a Hyper-V host or an Azure subscription. Requires Windows Management Framework 5+ (Windows). Requires Intel VT-x or AMD/V capable CPU, a decent amount of RAM, and low-latency high-throughput storage (No spinning disks please, as there are issues related to them). This solution supports setting up virtual machines with Windows 7, 2008 R2, 8 / 8.1 and 2012 / 2012 R2, 10 / 2016, 2019, and SQL Server 2008, 2008R2, 2012, 2014, 2016, 2017, 2019.
    Downloads: 5 This Week
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  • 17
    Multipass

    Multipass

    Multipass orchestrates virtual Ubuntu instances

    Multipass is a lightweight VM manager for Linux, Windows and macOS. It's designed for developers who want a fresh Ubuntu environment with a single command. It uses KVM on Linux, Hyper-V on Windows and QEMU on macOS to run the VM with minimal overhead. It can also use VirtualBox on Windows and macOS. Multipass will fetch images for you and keep them up to date. Since it supports metadata for cloud-init, you can simulate a small cloud deployment on your laptop or workstation.
    Downloads: 5 This Week
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  • 18
    Windroy

    Windroy

    Android emulation software

    Free program similar to BlueStacks App Player which can run the Android operating system from a window on your desktop. Essentially, it's an Android emulation that runs on a Windows PC
    Leader badge
    Downloads: 51 This Week
    Last Update:
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  • 19
    The PHP script engine for Java. --- Run PHP applications within any J2EE server or servlet engine and/or connect script engines like PHP with Java or .NET back ends efficiently.
    Leader badge
    Downloads: 89 This Week
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  • 20
    Simplify

    Simplify

    Android virtual machine and deobfuscator

    Simplify virtually executes an app to understand its behavior and then tries to optimize the code so that it behaves identically but is easier for a human to understand. Each optimization type is simple and generic, so it doesn't matter what specific type of obfuscation is used. Provides a virtual machine sandbox for executing Dalvik methods. After executing a method, it returns a graph containing all possible register and class values for every execution path. It works even if some values are unknown, such as file and network I/O. For example, any if or switch conditional with an unknown value results in both branches being taken. Analyzes the execution graphs from smalivm and applies optimizations such as constant propagation, dead code removal, unreflection, and some peephole optimizations. These are fairly simple, but when applied together repeatedly, they'll decrypt strings, remove reflection, and greatly simplify code. It does not rename methods and classes.
    Downloads: 3 This Week
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  • 21
    Mozart-Oz Programming System

    Mozart-Oz Programming System

    Runtime and development environment of Oz

    The Mozart Programming System is an open source implementation of the programming language Oz 3. Oz is a multi-paradigm language that supports declarative programming, object-oriented programming, constraint programming, concurrency and distributed programming as part of a coherent whole.
    Downloads: 42 This Week
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  • 22
    Jasmin is an interpreter for the x86 assembly language with a full-featured development environment aimed for educational purposes.
    Leader badge
    Downloads: 74 This Week
    Last Update:
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  • 23
    VM Tweaker
    "VM Tweaker" is a hidden features tweaker for VMWare "*.vmx" files. Originally started as a simple VM guest time tweaker it gradually evolved into quite a useful tool. Short overview of features: Different VM EFI/BIOS Tweaks, Memory performance optimizations; VM state backup (VMWare Player Snapshot-like behaviour); Time/date sync between host and guest; VM Debugging config; MAC address tweaking; UUID keep switch(VM 5.x-like); Hardware compatibility switch(esx/hosted); Tweak amount of VGA RAM and more...
    Leader badge
    Downloads: 21 This Week
    Last Update:
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  • 24

    jDosbox

    Java x86 emulator base on Dosbox

    This is an x86 emulator written in pure Java based on the Dosbox project. It currently supports running Dosbox's built in DOS and well as booting into Windows 95/98/NT4.
    Downloads: 17 This Week
    Last Update:
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  • 25

    WSLUI

    WSL2 Manager desktop application built with Tauri, Vite, React, and TypeScript

    WSL UI is a lightweight desktop app for managing Windows Subsystem for Linux distributions through a modern graphical interface, replacing complex command-line administration. Dashboard & Monitoring — View all distributions with real-time CPU, memory, and disk usage. Filter by status, WSL version, or installation source.
    Downloads: 59 This Week
    Last Update:
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