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

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  • 1
    Window Maker Live

    Window Maker Live

    Window Maker Live Linux Distribution

    Window Maker Live is an installable Linux Live ISO based on the current Trixie branch of Debian. The system uses the Window Maker window manager as the default graphical user interface. Window Maker Live's components have been carefully preconfigured and the desktop environment has a consistent visual appearance. Window Maker Live integrates selected components from other desktop environments such as XFCE4, MATE, LXQT, with a particular focus on GNUstep. The main idea behind this project is to integrate the Window Maker window manager as default user interface on top of a standard Debian/Trixie base system. It also serves as an alternate installation medium for Debian/Trixie. The second main idea not directly visible on the surface level is the inclusion of many useful command line utilities and tools for system administration. This effectively turns wmlive into a UNIX administrator's workbench for rescue and repair operations.
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    Downloads: 157 This Week
    Last Update:
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  • 2
    Omarchy

    Omarchy

    Opinionated Arch/Hyprland Setup

    Omarchy is an opinionated, pre-configured setup built on top of Arch Linux and the Hyprland window manager, designed to provide a “just-works” developer environment right out of the box. The project targets users who want the power and flexibility of Arch Linux and Hyprland without spending hours assembling the pieces—everything from install scripts to theming and workspace behavior comes pre-wired. Because it is “opinionated,” the maintainers make strong choices about defaults (tooling, layout, theming) so you end up with a coherent system rather than 1000 little decisions. It’s particularly geared toward web developers and teams who want a consistent environment across machines. While the project simplifies many pain points of manual Arch/Hyprland setups, it still expects users to be comfortable with advanced tools and Linux workflows. It also emphasizes extendability: you can use the default build as your starting point and then customize further.
    Downloads: 9 This Week
    Last Update:
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  • 3
    RancherOS

    RancherOS

    Tiny Linux distro that runs the entire OS as Docker containers

    RancherOS is the smallest, easiest way to run Docker in production. Every process in RancherOS is a container managed by Docker. This includes system services such as udev and syslog. Because it only includes the services necessary to run Docker, RancherOS is significantly smaller than most traditional operating systems. By removing unnecessary libraries and services, requirements for security patches and other maintenance are also reduced. This is possible because, with Docker, users typically package all necessary libraries into their containers. Another way in which RancherOS is designed specifically for running Docker is that it always runs the latest version of Docker. This allows users to take advantage of the latest Docker capabilities and bug fixes. Like other minimalist Linux distributions, RancherOS boots incredibly quickly. Starting Docker containers is nearly instant, similar to starting any other process.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 4
    DracOS GNU/Linux Remastered
    What is DracOS GNU/Linux Remastered ? DracOS GNU/Linux Remastered ( https://github.com/dracos-linux ) is the Linux operating system from Indonesia , open source is built based on Debian live project under the protection of the GNU General Public License v3.0. This operating system is one variant of Linux distributions, which is used to perform security testing (penetration testing). Dracos linux in Arm by hundreds hydraulic pentest, forensics and reverse engineering. Use a GUI-based tools-tools the software using the CLI (command line interface) and GUI (graphical user interface) to perform its operations. Now Dracos currently already up to version 3.1.5 with the code name "KUNTILANAK WITH REMASTERED".
    Downloads: 33 This Week
    Last Update:
    See Project
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  • 5
    Cosmos

    Cosmos

    Cosmos is an operating system "construction kit"

    Cosmos is an operating system "construction kit" made for Visual Studio 2022. Build your own OS using managed languages such as C#, VB.NET, and more! Cosmos (C# Open Source Managed Operating System) is an operating system development kit that uses Visual Studio as its development environment. Despite C# in the name any .NET-based language can be used including VB.NET, Fortran, Delphi Prism, IronPython, F# and more. Cosmos itself and the kernel routines are primarily written in C#, and thus the Cosmos name. Cosmos is not an operating system in the traditional sense, but instead, it is an "Operating System Development Kit". Cosmos lets you create operating systems just as Visual Studio and C# normally let you create applications. Most users can write and boot their own operating system in just a few minutes, all using Visual Studio.
    Downloads: 3 This Week
    Last Update:
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  • 6
    Virtual Machines and Appliances

    Virtual Machines and Appliances

    Virtual Machines in OVA format for VirtualBox and other virtualization

    Download ready-to-use OVA files containing your favorite OS, such as Debian, Ubuntu, Mint, FreeBSD, OpenBSD, etc. Simply "Import" the OVA into VirtualBox and go. (Control+I when in VirtualBox) Most distributions come in their 32 bit and 64 bit flavors, as well as "Minimal" and "GUI" versions. Where possible, guest additions have been installed to optimize the experience. Overall this is to aid in quick deployment, testing of environments, application development, or simply getting a personal virtual machine up and running as quickly as possible, with no fuss. Provided in OVA format, simply "File" -> "Import" in VirtualBox. VM Default Credentials: Root Password: toor User Password: nimda The "user" name will be the distribution you're running. For example if it's FreeBSD, the user's name is "freebsd".
    Downloads: 73 This Week
    Last Update:
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  • 7
    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
    Downloads: 24 This Week
    Last Update:
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  • 8
    JNode is a Java New Operating system Design Effort. JNode is a simple to use and install Java operating system for personal use on modern devices. Any java application runs on it, fast and safe. See our homepage for additional information.
    Downloads: 10 This Week
    Last Update:
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  • 9
    linux-factory

    linux-factory

    Framework used to create custom debian linux operating systems

    linux-factory is a utility designed to streamline the process of building and customizing Linux kernel images using a simple, scriptable environment. It provides a modular framework for configuring kernel options, applying patches, and generating bootable images, making it ideal for embedded developers, kernel hackers, and OS maintainers. With a strong emphasis on repeatability and automation, linux-factory reduces the manual overhead of compiling and deploying Linux kernels across various platforms.
    Downloads: 1 This Week
    Last Update:
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  • 10
    KaNaPi

    KaNaPi

    Educational Linux Distribution

    Main goals: * Prepare operating system based on Linux kernel and free software for use at home from scratch by building sources. Binary packages/images are also available. * Each package is installed in separate directory, so you can use different versions of applications and libraries by design. * There is only one user 'kanapi' with root permissions, so you don't have to login, remember passwords, etc. * Simple configuration * Automatic compilation.
    Downloads: 26 This Week
    Last Update:
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  • 11
    VM Migration Assistant

    VM Migration Assistant

    Virtual Disk Convert Between VMDK,VHD(X),VDI,QCOW/QCOW2,RAW(IMG)

    VM Migration Assistant is a free tool for cloning and transforming VMs from one format to another, as well as converting physical machines into virtual ones. It is utilized when migration or hypervisor switch is required. Compared to the typical converters built into hypervisors, it offers bi-directional conversion between all the major VM disk formats: VMDK(VM, VirtualBox), VHD/VHDX(Hyper-V), QCOW/QCOW2(KVM, Xen), VDI(VirtualBox) and raw binary image(KVM). VM Migration Assistant has numerous competitive gains over converters built into hypervisors(in plan). First, it supports bi-directional VM conversion between different hypervisors. For saving time during migration and hypervisor switch, V2V Converter / P2V Migrator enables to convert VMs directly from one hypervisor storage to another, without creating an extra VM disk copy. On top of that, the utility ensures a safe P2V migration by using a VSS snapshot of the source machine to ensure data consistency.
    Downloads: 14 This Week
    Last Update:
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  • 12
    Live CD With Zerofree Utility i686 32Bit

    Live CD With Zerofree Utility i686 32Bit

    A Custom Puppy Linux Live CD With Zerofree Utility i686 32 Bit

    After Booting with this Live CD, just click on the CDROM icon on the Desktop, to open its folder contents, then Right Click the zerofree.sh file and Choose the "Run in Terminal" option and then follow the instructions shown on the terminal. As you may be aware, Booting with a Live CD, requires that you need to change the Boot Order on your System / Guest BIOS, quickly on startup, by pressing either F2 OR F12 OR F10 OR an equivalent key and then change the Boot Order to boot from the CDROM first. Some Hints: Puppy Linux Live CDs show some dialogs / settings window on first startup / first shutdown. Feel free to dismiss / close them, if you do not want to make any changes, to the live cd's operation, next time, on the same system. This will not affect the zerofree's work in any way. Apart from this, using the Internet Browser, built in, would require a Free Memory of 1 GB or more, for better Performance ( as it is generally a memory intensive activity )
    Downloads: 16 This Week
    Last Update:
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  • 13
    SharkLinux

    SharkLinux

    Virtualization Focused OS & Cloud Compatible Desktop Environment

    SharkLinux is a 64 bit Linux Desktop that specializes in virtualization. The OS is based on Ubuntu 20.04 and features a custom MATE/XFCE desktop capable of running on a cloud server with little impact on performance. The OS runs KVM as the primary hypervisor and provides a wide range of tools to build and run VM's and containers. SharkLinux has several distinct qualities from other Linux systems such as; automatic system upgrades, sudo users can run shell commands without a password. Build scripts are one-click and configured to run without conflicting with other included software. SharkLinux is built exclusively in a cloud environment to ensure compatibility
    Downloads: 15 This Week
    Last Update:
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  • 14
    Ubuntu Touch

    Ubuntu Touch

    for Sony Xperia Tablet Z

    Description, Install instructions: http://forum.xda-developers.com/showthread.php?t=2336018
    Downloads: 14 This Week
    Last Update:
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  • 15
    SLAX based LiveCD showcasing Sun Microsystem's open source project "Project Looking Glass 3D" (LG3D). Presented in 2004 LG3D combines a stunning 3D UI with the benefits of Java (easily expandable and reusable code, platform independency, etc.).
    Downloads: 4 This Week
    Last Update:
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  • 16
    CandyROMs

    CandyROMs

    CandyRoms is a custom Android ROM by enthusiasts

    The purpose of this project is to provide the downloads and OTA capability for our releases of Android for a host of different Android devices. This site provides Official releases, which means they come from Official Device Maintainers who support them. They are shared here as a free service to you as a part of our enthusiast modus operandi."Taste the Sweetness!"
    Downloads: 11 This Week
    Last Update:
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  • 17

    reactOS vmware image

    reactos vmware image

    vmware image for the REACTOS
    Downloads: 11 This Week
    Last Update:
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  • 18
    DIET-PC (DIskless Embedded Technology Personal Computer) is a software kitset enabling IT professionals to build an open source GUI appliance based on commodity x86 (PC), PowerPC (Mac) or ARM (handheld) hardware, using an embedded Linux methodology.
    Downloads: 3 This Week
    Last Update:
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  • 19
    OnixOS

    OnixOS

    OnixOS Arch is a Linux-based and open source distribution.

    OnixOS Arch is a Linux-based and open source distribution. It comes with its own system-based functional programming language (O Language). It offers some customized tools for developers.
    Downloads: 5 This Week
    Last Update:
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  • 20
    TinyMe is a minimalist distribution of Linux aimed at making your computing experience as bloat and lag-free as possible. We do this for those of you who have old computers, like to mess around with small/fast systems, or just want a minimal environment.
    Downloads: 7 This Week
    Last Update:
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  • 21
    Linux port for the Sony Play Station Portable (PSP) gaming system. Based on Jackson Mo's uClinux 2.6.22-uc1 port to the PSP (http://jacksonm88.googlepages.com/linuxonpsp.htm)
    Downloads: 6 This Week
    Last Update:
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  • 22
    virtual-ubuntu

    virtual-ubuntu

    Ubuntu (64 bit) OVA, VDI

    Ubuntu (64 bit) OVA, VDI VBoxGuestAdditions: Installed Password: passwort virtual-ubuntu powered by juergenrohn
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    Downloads: 5 This Week
    Last Update:
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  • 23
    ownOS: MacBuntu

    ownOS: MacBuntu

    Developed by Robert Kagan

    Developed by Robert Kagan Based on Ubuntu 16.04.1 LTS (https://www.ubuntu.com/) Features conntent from http://www.noobslab.com/
    Downloads: 3 This Week
    Last Update:
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  • 24

    Linux-Android Mini-distro

    Linux mini-distro for Android devices, not requiring root access

    Downloads: 2 This Week
    Last Update:
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  • 25
    ZED OS

    ZED OS

    ZED OS the clone of Windows XP

    ZED OS is a portuguese Linux based distribution (remaster of Ubuntu Mate). It was designed for users who want an innovative system. With both 3D and 2D interfaces you'll be able to chosse the better one according to your hardware/needs. It's Web Based and inspired in Windows XP from Microsoft
    Downloads: 2 This Week
    Last Update:
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