Open Source Desktop Operating Systems Operating System Kernels

Operating System Kernels for Desktop Operating Systems

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

  • Skillfully - The future of skills based hiring Icon
    Skillfully - The future of skills based hiring

    Realistic Workplace Simulations that Show Applicant Skills in Action

    Skillfully transforms hiring through AI-powered skill simulations that show you how candidates actually perform before you hire them. Our platform helps companies cut through AI-generated resumes and rehearsed interviews by validating real capabilities in action. Through dynamic job specific simulations and skill-based assessments, companies like Bloomberg and McKinsey have cut screening time by 50% while dramatically improving hire quality.
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  • Rezku Point of Sale Icon
    Rezku Point of Sale

    Designed for Real-World Restaurant Operations

    Rezku is an all-inclusive ordering platform and management solution for all types of restaurant and bar concepts. You can now get a fully custom branded downloadable smartphone ordering app for your restaurant exclusively from Rezku.
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  • 1
    ReactOS

    ReactOS

    An operating system based on the best Windows NT design principles

    ReactOS is an open source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft Windows NT family of operating systems (NT4, 2000, XP, 2003).
    Leader badge
    Downloads: 2,942 This Week
    Last Update:
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  • 2
    AROS Research Operating System
    The AROS Research Operating System is an effort to implement an Open Source and portable operating system that is compatible with AmigaOS(TM). Originally, it was meant as a direct reimplementation, but already has features not existing in AmigaOS.
    Leader badge
    Downloads: 326 This Week
    Last Update:
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  • 3
    The FreeDOS Project

    The FreeDOS Project

    FreeDOS is an open source DOS-compatible operating system

    FreeDOS is an open source DOS-compatible operating system that you can use to play classic DOS games, run legacy business software, or write new DOS programs. Any program that works on MS-DOS should also run on FreeDOS.
    Downloads: 39 This Week
    Last Update:
    See Project
  • 4
    QNAP NAS GPL Source

    QNAP NAS GPL Source

    QNAP GPL Source

    GPL source for QNAP Turbo NAS
    Leader badge
    Downloads: 77 This Week
    Last Update:
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  • MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design. Icon
    MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design.

    Microstation enables architects, engineers, and designers to create precise 2D and 3D drawings that bring complex projects to life.

    MicroStation is the only computer-aided design software for infrastructure design, helping architects and engineers like you bring their vision to life, present their designs to their clients, and deliver their projects to the community.
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  • 5
    DOS/32 Advanced DOS Extender is a drop-in replacement for the DOS/4GW DOS Extender and compatibles. Being fast, small and flexible DOS/32A can be used in many environments, from embedded systems to DOS emulators, by both developers and end users alike.
    Leader badge
    Downloads: 44 This Week
    Last Update:
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  • 6
    Public Domain Operating System (currently x86 and 80386 and S/370 and S/390). Note that latest source code is here in git, but latest executables and packaged source are at http://pdos.org
    Leader badge
    Downloads: 11 This Week
    Last Update:
    See Project
  • 7
    nxtOSEK is an RTOS for LEGO Mindstorms NXT. nxtOSEK consists of I/O driver part of LEJOS NXJ, TOPPERS/ATK1 RTOS, and glue code for them. You can write applications for NXT in ANSI-C/C++. Check nxtOSEK site: http://lejos-osek.sourceforge.net
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8

    SchilliX

    The first OpenSolaris based distro (since June 2005)

    Schillix is a complete OpenSource operating system based on the source code of OpenSolaris.
    Downloads: 7 This Week
    Last Update:
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  • 9
    Haiku is an open-source operating system currently in development designed from the ground up for desktop computing.
    Downloads: 4 This Week
    Last Update:
    See Project
  • The AI workplace management platform Icon
    The AI workplace management platform

    Plan smart spaces, connect teams, manage assets, and get insights with the leading AI-powered operating system for the built world.

    By combining AI workflows, predictive intelligence, and automated insights, OfficeSpace gives leaders a complete view of how their spaces are used and how people work. Facilities, IT, HR, and Real Estate teams use OfficeSpace to optimize space utilization, enhance employee experience, and reduce portfolio costs with precision.
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  • 10
    Ancient Linux on Windows

    Ancient Linux on Windows

    Building and running ancient Linux on Windows

    While I may have started with Linux 0.11, I've expanded this to include several older relases of the Linux kernel that you can cross compile from Windows, and run on Qemu. I've managed to get the older versions of the software tools running on Windows, so that there is no major invasive source changes, outside of either broken drivers, or massaging the makefiles to find things in the new paths, and calling the appropriate tools where needed. Linux 0.10 is the first oldest version of Linux that is somewhat usable. While it lacks things like TCP/IP, and robust filesystems, it does offer a small kernel size, perfect for playing around with. You can comfortably make changes on Windows, re-compile and test all from a 'normal' desktop.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 11
    Cambridge Z88

    Cambridge Z88

    Software development for 4Mb portable, using Z80 CPU and AA batteries

    This project is for the portable computer "Cambridge Z88", produced by Sir Clive Sinclair (of ZX Spectrum fame). We continue to support software development (ROM, 3rd party apps on memory cards and desktop applications). We have moved to https://cambridgez88.jira.com/wiki (development, source code and documentation). However, we continue to publish files for download here.
    Leader badge
    Downloads: 5 This Week
    Last Update:
    See Project
  • 12
    This is GIMI, the Graphical Interfaced Multitasking Interpreter. One of the few GUIs made in QuickBASIC featuring multitasking. This one has its own script language for making programs, damm fast SVGA modes, lots of programs, and more!
    Leader badge
    Downloads: 5 This Week
    Last Update:
    See Project
  • 13

    OpenVPN 2.3.2 I003nvp

    IPv6 compatibility

    First version of OpenVPN opensource software that is compatible with IPv6.
    Leader badge
    Downloads: 5 This Week
    Last Update:
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  • 14

    TIPC Cluster Domain Sockets

    Cluster wide IPC providing datagram, connection, and bus messaging

    The Transparent Inter Process Communication service can best be described as a cluster wide equivalent to the Unix Domain Socket IPC, but with much more features. Go to http://www.tipc.io for more details.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 15
    The Saint Jude Project is a Project to develop Kernel-Level IDS mechinisms to protect the integrity of host systems.
    Downloads: 1 This Week
    Last Update:
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  • 16
    Sensa

    Sensa

    Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..

    Sensa is not an operating system, is a work environment compatible with Android © 4.4.4, Firefox OS ©, Linux Ubuntu 12.12 ©, MacOS Classic 7 ©, MS -DOS © operating systems, and Microsoft Windows 8.1 ©; whose distribution is free, and with source code available under GNU GPL 2.0 license .
    Downloads: 4 This Week
    Last Update:
    See Project
  • 17

    Database Test Suite

    Mirror of: https://github.com/osdldbt/

    Mirror of: https://github.com/osdldbt/ This Database Test Suite aims to create database workload test kits used to simulate heavy user loads for OLTP, Decision Support, and e-commerce database transactions. These test kits can also be used to gather performance results for Linux and other
    Downloads: 4 This Week
    Last Update:
    See Project
  • 18
    Components supporting real-time, reliability, high-availability, and security services in standard operating environments. Starting with the C5 modular microkernel, a RT-POSIX layer based on FreeBSD 4.1, and the CDE cross-development environment.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 19

    MEOS

    32 bit low level Operating System

    This site will be a gift to MenuetOS, a 32 bit assembly coded operating system from Finland, Russia and Hungary.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 20
    Linux kernel patch to allow 8086/DOS programs to be executed in virtual 8086 mode under 64-bit Linux
    Downloads: 3 This Week
    Last Update:
    See Project
  • 21

    jArt Java Operating System

    IA-32 operating system with Java virtual machine embedded into the ker

    IA-32 operating system with Java virtual machine embedded into the kernel. Part of the kernel is written in Java. Only Java applications can run on this system. jArt VM is a stand-alone virtual machine that interprets java bytecode. It can run under Linu
    Downloads: 2 This Week
    Last Update:
    See Project
  • 22
    Old Skool Tech
    This project is an effort to develop open source software for all old platforms, like MSX, Commodore, AMIGA, Atari, ..... and collect technical information about old platforms, keeping the "old skool" flame alive.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    BNL OS
    BNL OS is a free, modern operating system based on the design of Windows XP/2003.This is not a Linux based system, and shares none of the unix architecture. Please remember, this is in the development stage, and is not reccommended for everyday use.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    EMOS is a real-time embedded operating system core derived/upgraded from ucOS/II; EMOS is a realtime embedded operating system derived from ucOS-II v2.0, with many modifications, But the core idea is the same;
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Micro-80 aims to simulate a Z80 homebrew computer down to the bare metal: 64K RAM, ADM-3A terminal, parallel port, serial port and...3.5" 1.44MB floppy drive?!
    Downloads: 1 This Week
    Last Update:
    See Project
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