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

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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).
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    Downloads: 9,341 This Week
    Last Update:
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  • 2

    Kernelloader

    Run Linux on the Playstation 2

    Kernelloader is a free bootloader for PS2 Linux and other Playstation 2 operating systems. Loading can be done by "Action Replay Media Player", by "memory card exploit", by "FMCB" or any other homebrew loading method. If you downloaded the latest Linux Live DVD, you need to run the online updater to be able to play Youtube videos.
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    Downloads: 129 This Week
    Last Update:
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  • 3
    BerserkArch

    BerserkArch

    A bleeding-edge, security-centric Arch-based Linux distribution.

    BerserkArch is a security-focused, performance-tuned Linux operating system (OS) based on Arch Linux, designed for developers, hackers, and technical users. A bleeding-edge, security-centric Arch-based Linux distribution crafted for hackers, developers, and nerds alike. Following the Arch Linux philosophy, it is designed to be highly customizable, allowing users to build their environment with only the components they need, rather than having a lot of pre-installed software like some other security distributions (e.g., Kali Linux). As an Arch-based distribution, it benefits from the rolling release model, providing users with the latest software versions and kernel updates. BerserkArch is a dist "designed to make you powerful" for specific use cases like reverse-engineering binaries and automating exploits, rather than being an easy-to-use distribution for general beginners.
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    Downloads: 237 This Week
    Last Update:
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  • 4
    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: 23 This Week
    Last Update:
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    Auth0 B2B Essentials: SSO, MFA, and RBAC Built In

    Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

    Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.
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  • 5
    Syllable Desktop is a complete operating system that is easy to use, powerful, lightweight and extraordinarily fast and responsive. It has its own kernel, filesystem, GUI and applications. Syllable Server is a matching small and efficient Linux server.
    Downloads: 13 This Week
    Last Update:
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  • 6
    Partition Logic

    Partition Logic

    Disk partitioning and data management for x86-compatible systems

    Based on the Visopsys operating system, Partition Logic is a bootable disk image featuring a disk manager program that can create, delete, erase, format, defragment, resize, copy, and move partitions and modify their attributes. It can copy entire hard disks from one to another. Other tools, such as system diagnostics, are also available within the system.
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    Downloads: 19 This Week
    Last Update:
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  • 7
    Super Ya-DOS

    Super Ya-DOS

    Another Disk Operating System (DOS)

    Super Ya-DOS was being written from 1998 through 2004. It's a multiuser operating system for x86 machines. It was written in TASM 2.0 and PowerBASIC 2.10f. Follow these web pages as well, http://test.nostalgy.net.ru/alien/sites/ya-dos/ http://old-dos.ru/index.php?page=files&mode=files&do=show&id=2691
    Downloads: 19 This Week
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  • 8

    The NitrOS-9 Project

    OS-9/6809 compatible operating system for Tandy CoCo and Dragon

    The NitrOS-9 Project provides an OS-9/6809 compatible operating system for the Tandy/TRS-80 Color Computer and Dragon home computer.
    Downloads: 5 This Week
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  • 9
    Haiku is an open-source operating system currently in development designed from the ground up for desktop computing.
    Downloads: 8 This Week
    Last Update:
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  • 10
    ManuOS

    ManuOS

    My own operating system.

    Currently ManuOS kernel is under development. Once kernel is complete, a good Graphical User Interface will be developed for ManuOS. ManuOS runs on IA-32, x86-64 and currently operates in protected mode. In future ManuOS is intended to run in long mode.
    Downloads: 7 This Week
    Last Update:
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  • 11
    HelenOS

    HelenOS

    A microkernel-based multiserver operating system written from scratch.

    HelenOS is a portable microkernel-based multiserver operating system written from scratch. It decomposes key operating system functionality such as file systems, networking, device drivers and graphical user interface into a collection of fine-grained user space components that interact with each other via message passing. A failure or crash of one component does not directly harm others. HelenOS is therefore flexible, modular, extensible, fault tolerant and easy to understand. HelenOS does not aim to be a clone of any existing operating system and trades compatibility with legacy APIs for cleaner design. Most of HelenOS components have been made to order specifically for HelenOS so that its essential parts can stay free of adaptation layers, glue code, franken-components and the maintenance burden incurred by them.
    Downloads: 12 This Week
    Last Update:
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  • 12
    NuttX

    NuttX

    Real-Time Embedded Operating System

    Nuttx is a real time embedded operating system (RTOS). Its goals are: (1) small footprint usable in deeply embedded, resource constrained environments, (2) fully scalable from tiny (8-bit) to moderate (32-bit), (3) standards compliance, (4) real time, and (5) totally open. Think "Tiny Linux". NuttX is now and Apache project in incubation. See https://nuttx.apache.org/download/ for the latest downloads.
    Downloads: 2 This Week
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  • 13
    ELKS is a subset of the Linux kernel that runs on IBM compatible PCs from 8086 up. It is intended to get use out of obsolete old hardware, for use in embedded systems, and as an educational tool. ELKS has been moved to Github to protest SourceForge's installer adware hijacking. This does not directly affect ELKS, but it does affect many major open source projects such as Gimp and FileZilla by attempting to trick the user into installing adware in order to download these programs. I refuse to leave ELKS here with such policies in effect. If you have questions about this, please email jody@c02ware.com.
    Downloads: 2 This Week
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  • 14
    HackShark Linux

    HackShark Linux

    Lightweight Linux distro for penetration testing

    Based on MATE environment HackShark Linux is a lightweight distribution for penetration testing, cyber forensic investigation and vulnerability assessment purpose.
    Downloads: 7 This Week
    Last Update:
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  • 15
    Visopsys

    Visopsys

    Alternative operating system for x86 computers

    Visopsys is an alternative operating system for PC compatible computers. In development since 1997, this system is small, fast, and open source. It features a simple but functional graphical interface, pre-emptive multitasking, and virtual memory. Though it attempts to be compatible in a number of ways, Visopsys is not a clone of any other operating system. You can demo the distribution from a “live” CD/DVD or floppy disk
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    Downloads: 4 This Week
    Last Update:
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  • 16
    Cloudium OS

    Cloudium OS

    Written in pure ASM and Exode with cloud computing in mind.

    Cloudium OS is being written in pure ASM. It's designed for speed and ease, having cloud computing in mind. It also is secure (without requiring constant user input like Windows). But, how are we going to do this? Well every os wants/says these kind of things, so to accomplish our goals we follow these simple rules: keep it simple (that's way better then these complex interfaces etc. almost nobody wants), generalize (this makes things easier and more useful without extra complexity) and be inventive (sometimes doing it the classical way just doesn't work). Note: development peace will be temporarily lowered until February the fifth. Please check out our OS and Project site!
    Downloads: 2 This Week
    Last Update:
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  • 17

    EXIRION/OS

    Embedded Operating System

    EXIRION/OS is an operating system for embedded computer systems. These operating systems are designed to be compact, efficient at resource usage, and reliable, forsaking many functions that non-embedded computer operating systems provide, and which may not be used by the specialized applications they run. They are frequently also referred to as real-time operating systems, and the term RTOS is often used as a synonym for embedded operating system. EXIRION/OS project, a Open operating system for computers that can be used in specific operations that require execute a task at a time, EXIRION/OS operating system is a monolithic and mono layered task, which can be used to control complex electronic equipment without the use of instruments PLC, offering a wide range of electronic and industrial applications, EXIRION/OS is also an educational tool, it is an open source operating system to use it as an example of building operating systems in universities and technical colleges.
    Downloads: 2 This Week
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  • 18

    Android on PXA270

    Android on PXA270

    Porting Android to Intel(Marvell) ARM XScale PXA270. A complete build system for embedded Linux and Android on PXA270. It was open source for anyone but no responsibility for any damage resulting from any usage of the software. Demo : http://www.youtube.com/watch?v=3Ine1k4Hzy8 http://www.youtube.com/watch?v=3Xp5zMPOI1c http://www.youtube.com/watch?v=lYzRSNuUsIw http://www.youtube.com/watch?v=1lmmld7LjGM http://www.youtube.com/watch?v=CNGhFmCwaxw Documents : http://sourceforge.net/projects/android-pxa270/files/BringUp_Android_on_PXA270.pdf http://sourceforge.net/projects/android-pxa270/files/Android_Porting_on_PXA270.pdf Checkout the source code : svn co https://android-pxa270.svn.sourceforge.net/svnroot/android-pxa270 android-pxa270 Project host : http://www.mask.org.tw Author : mask.chung@gmail.com Blog : http://www.mask.org.tw/blog Linkedin : http://www.linkedin.com/in/maskchung Donate: Paypal or http://www.mask.org.tw
    Downloads: 1 This Week
    Last Update:
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  • 19
    AquariusOS

    AquariusOS

    An open source OS written in assembly.

    An open source OS. It is 32-Bit and when possible 64 and 128-Bit. We are working on a complete rewrite. After which we will work on our UI. ATTENTION!: After AquariusOS 0.0.4 AquariusOS will be based off of aqua-next. 0.0.5 with an aqua-next base will hopefully be released BEFORE 2016.
    Downloads: 3 This Week
    Last Update:
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  • 20
    THIS PROJECT IS INACTIVE!!
    Downloads: 3 This Week
    Last Update:
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  • 21
    Downloads: 2 This Week
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  • 22
    MineBios

    MineBios

    16 bit real mod minecraft clone running in bios

    Downloads: 2 This Week
    Last Update:
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  • 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:
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  • 24
    Blueport is an italian Open Source 32-bit operating system ... This project has temporarly moved to Gna.org: <a href="http://gna.org/projects/blueport">Blueport project</a>
    Downloads: 1 This Week
    Last Update:
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  • 25
    FROST operating system
    NOTICE: This project has been moved to https://github.com/thrimbor/frost The sourceforge project will not get updated anymore! FROST is a free operating system written in FreeBASIC and Assembly with the goal to create a small and stable system. It uses GRUB 2 as its bootloader.
    Downloads: 1 This Week
    Last Update:
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