Showing 625 open source projects for "custom operating systems"

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  • 1
    Glow OS

    Glow OS

    System Analysis Software

    Glow is an educational, hobbyist operating system written in C and Assembly, developed to help learners understand the internals of OS design and kernel development. Targeting x86_64 systems, Glow features its own kernel, bootloader, and minimal userland. With clear code structure and a simple design, it serves as a playground for experimenting with low-level systems programming, boot sequences, interrupt handling, and basic UI components like shells and text rendering.
    Downloads: 12 This Week
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  • 2
    Winux Operating System

    Winux Operating System

    Breathe New Life Into Your Computer - www.winux.is

    Break free from hardware restrictions and forced upgrades. Winux is the definitive successor for Windows 10 users seeking performance and reliability. Featuring an Intuitive Familiar Interface and Native Compatibility for your essential software.
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    Downloads: 12,122 This Week
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  • 3
    openFyde

    openFyde

    openFyde supported hardware "x86 PC with Intel HD graphics

    overlay-amd64-openfyde is the official overlay repository for the amd64 (x86_64) build of openFyde, a Chromium OS-based distribution tailored for developers, power users, and alternative devices outside of Google's supported ChromeOS hardware. openFyde offers a fast, secure, and web-centric desktop experience with support for Linux apps, Android containers, and cloud integration. This overlay includes the custom configurations and firmware patches necessary to optimize openFyde for generic...
    Downloads: 90 This Week
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  • 4
    hhuOS

    hhuOS

    hhuOS - A small operating system

    hhuOS is an educational operating system project developed by students at Heinrich Heine University (HHU) in Düsseldorf, Germany. It is built from scratch in C and Assembly and intended as a teaching tool to help students grasp the foundations of kernel development, memory management, system calls, and multitasking. The project focuses on clarity, modularity, and hands-on experimentation with real OS components, making it suitable for OS development courses or personal exploration.
    Downloads: 22 This Week
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  • 5
    Pony OS

    Pony OS

    My Little Unix: Kernels are Magic

    ponyos is a lightweight, UNIX-like operating system developed as a personal hobby project by the creator of ToaruOS. It features a monolithic kernel written in C and aims for a POSIX-compliant environment with a built-from-scratch userland. ponyos includes a graphical interface, dynamic linker, shared libraries, and a package manager. It’s designed for fun, experimentation, and as a platform to learn and play with operating system internals, with surprisingly advanced features given its...
    Downloads: 51 This Week
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  • 6
    k23

    k23

    Experimental WASM Microkernel Operating System

    k23 is a microkernel-based operating system project written in Zig, an emerging systems programming language focused on safety, simplicity, and performance. k23 explores the design of modern OS features like message-passing, memory protection, and modular service construction using Zig’s powerful low-level capabilities. It is an experimental and educational project intended to show how Zig can be used for robust, readable systems programming while enabling contributors to rethink traditional OS structures from the ground up.
    Downloads: 0 This Week
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  • 7
    eduOS-rs

    eduOS-rs

    A teaching operating system written in Rust

    eduOS-rs is a teaching operating system written in Rust, developed by RWTH Aachen University to support courses on systems programming and operating systems. It serves as a practical and educational tool that demonstrates key OS concepts like memory management, multitasking, privilege separation, and system call handling in a safe and modern language. Designed to run on x86_64 hardware using QEMU, eduOS-rs leverages Rust’s ownership model and type safety to reduce bugs common in low-level systems development. ...
    Downloads: 5 This Week
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  • 8
    StartOS

    StartOS

    Linux server OS optimized for self-hosting

    StartOS is a sovereign, self-hosted operating system built by Start9 Labs to empower individuals with digital independence. Designed to run on personal servers, it provides a privacy-first interface for installing, managing, and running decentralized applications without needing technical expertise. StartOS includes services like Bitcoin nodes, messaging platforms, file hosting, and password managers, all running locally and without third-party control. With a user-friendly UI and strong...
    Downloads: 24 This Week
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  • 9
    SerenityOS

    SerenityOS

    The Serenity Operating System

    SerenityOS is an open source Unix-like operating system project with its own custom kernel, graphical user interface, system libraries, and userland tools. It combines a nostalgic “90s UI aesthetic” with modern system capabilities: a preemptive, multi-threaded kernel, own browsers, network stack, file systems, IPC, security features, and a suite of graphical / developer applications.
    Downloads: 22 This Week
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  • 10
    Sandboxie

    Sandboxie

    Sandboxie Plus & Classic

    Sandboxie (and its enhanced fork Sandboxie Plus) is an open-source sandboxing tool for Windows NT-based systems. It creates isolated virtual environments in which applications can run safely without permanently modifying the system, ideal for testing untrusted software. Sandboxie Classic has the old no longer developed MFC-based UI, hence it lacks native interface support for Plus features. Although some of the missing features can be configured manually in the Sandboxie.ini configuration file or even replaced with custom scripts, the Classic edition is not recommended for users who want to explore the latest security options. ...
    Downloads: 86 This Week
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  • 11
    Pop!_OS

    Pop!_OS

    A project for managing all Pop!_OS sources

    Pop!_OS repository serves as the central source code hub for Pop!_OS, a Linux distribution developed by System76 and based on Ubuntu, designed to deliver a polished and performance-oriented desktop experience. It contains packaging, configuration, and system-level customizations that define how Pop!_OS behaves and differentiates itself from standard Ubuntu installations. The project integrates system tools, hardware optimizations, and user interface components into a cohesive operating...
    Downloads: 33 This Week
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  • 12
    CoolPotOS

    CoolPotOS

    CoolPotOS for ia32 / amd64

    CoolPotOS is a small, hobbyist operating system designed to be minimal and educational, offering the most basic kernel capabilities while remaining accessible to beginners. Written in C and Assembly, it focuses on bootstrapping, kernel entry, and simple console output. Though in early stages, CoolPotOS showcases the boot process, memory segmentation, and essential CPU features, serving as a great learning resource for those new to operating system internals.
    Downloads: 1 This Week
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  • 13
    ProzillaOS

    ProzillaOS

    Web-based operating system inspired by Ubuntu Linux and Windows

    ProzillaOS is a lightweight, user-friendly Linux distribution based on Arch Linux, designed to offer a fast, minimal, and easy-to-use experience out of the box. Tailored for new users and enthusiasts who enjoy the power of Arch with added usability, ProzillaOS provides a curated desktop environment with pre-installed essential applications, graphical tools for package management, and a clean, modern aesthetic. Its goal is to maintain a balance between simplicity and customization, making it...
    Downloads: 9 This Week
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  • 14
    WANIX

    WANIX

    A virtual environment kit for the local-first web

    wanix is a hobbyist Unix-like operating system written from scratch in C, aiming to implement core features of a traditional OS in an educational and modular way. The project walks through kernel development starting from bootloading, memory management, system calls, and eventually to user programs. With support for x86_64 and simple tools like a shell and basic file I/O, wanix serves as both a learning platform and a launching point for more advanced kernel features.
    Downloads: 1 This Week
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  • 15
    ArkOS

    ArkOS

    Another rockchip Operating System

    Another rockchip Operating System. This OS came about from an initial fork of The Retro Arena to support a roms folder on a NTFS partition so that the management of roms could be done by simply putting you SD card into an appropriate card reader on a Windows 10 computer. Through various upgrades and tweaks overtime, it has diverged significantly from TheRA and it's time to rebrand this distro. With suggestions provided by community members, ArkOS was chosen.
    Downloads: 184 This Week
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  • 16
    erase-install

    erase-install

    A script that automates downloading macOS installers

    erase-install is a robust macOS automation tool designed to erase and reinstall macOS on a device using Apple’s official installer packages. Targeted at IT administrators and deployment professionals, it simplifies wiping and re-provisioning Mac systems—especially in enterprise or education environments. It supports options for downloading the latest macOS version, preserving user settings, automating pre- and post-install scripts, and initiating the erase-and-install process without manual...
    Downloads: 1 This Week
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  • 17
    Tock OS

    Tock OS

    A secure embedded operating system for microcontrollers

    Tock is a secure, embedded operating system designed for microcontrollers and low-power hardware platforms. Written in Rust, it uses a novel kernel architecture where the OS runs a minimal trusted core and all userland code, including device drivers, is sandboxed and isolated. Tock is ideal for IoT devices, wearables, and embedded research projects where reliability and safety are critical. Its capability-based security model and preemptive multitasking allow developers to safely run...
    Downloads: 0 This Week
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  • 18
    OctoPi

    OctoPi

    Raspberry PI distro for controlling 3D printers over the web

    OctoPrint is a snappy web interface for your 3D printer that allows you to control and monitor all aspects of your 3D printer and print jobs right from within any browser on your network. OctoPi includes the OctoPrint software for 3d printer and a mjpg-streamer, which can be used to stream JPEG files over an IP-based network. Includes RaspiCam support. Learn how you can support OctoPrint here. https://octoprint.org/support-octoprint/
    Downloads: 5 This Week
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  • 19
    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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  • 20
    OSHI

    OSHI

    Native Operating System and Hardware Information

    OSHI is a free JNA-based (native) Operating System and Hardware Information library for Java. It does not require the installation of any additional native libraries and aims to provide a cross-platform implementation to retrieve system information, such as OS version, processes, memory and CPU usage, disks and partitions, devices, sensors, etc.
    Downloads: 32 This Week
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  • 21
    OpenFang

    OpenFang

    Open-source Agent Operating System

    OpenFang is an open-source agent operating system designed to orchestrate autonomous AI agents and workflows in a structured, production-oriented environment. Written primarily in Rust, the project focuses on building a high-performance runtime where multiple specialized agents can collaborate to complete complex computational or development tasks. It aims to move beyond simple chat-based agents by providing infrastructure for persistent agent memory, task coordination, and scalable execution. ...
    Downloads: 0 This Week
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  • 22
    Cosmos

    Cosmos

    Cosmos is an operating system "construction kit"

    ...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: 10 This Week
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  • 23
    DreamShell

    DreamShell

    Operating system for the Sega Dreamcast

    The Dreamshell is the operating system for the Sega Dreamcast based on the KallistiOS kernel. It has a dynamic loadable modular system and interface for creating applications with XML UI and both C/C++ and Lua scripts on. You can see examples in ready-made applications and modules, drivers for various devices, formats and interfaces. Examples for audio and video decoding, compression, packaging, binding, network, emulation, scripts and more. From hardcore low-level assembler to high-level...
    Downloads: 26 This Week
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  • 24
    Rufus

    Rufus

    Utility to create bootable USB flash drives

    Rufus is a standalone app designed to format and create a bootable USB drive for a large variety of ISOs. The app is just over 1MB in size and is notably faster than similar competitor apps such as the Windows 7 USB utility, Universal USB Installer, and UNetbootin. Rufus can come in handy when you need to simply format a USB drive, install an OS on a machine that lacks a CD/DVD-ROM drive, or when you need to boot an operating system temporarily without intentions of actually installing...
    Downloads: 767 This Week
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  • 25
    MentOS

    MentOS

    An educational 32-bit linux-like Operating System

    MentOS is an educational operating system developed for academic use, particularly in university settings, to help students understand low-level system concepts such as process management, memory handling, and scheduling. Written in C, MentOS closely mimics a simplified Unix-like OS and includes hands-on implementations of key kernel features. Designed to be highly readable and modular, it offers a practical approach to learning systems programming through real-world kernel components, making it a valuable tool for operating system courses and personal exploration.
    Downloads: 3 This Week
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