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.

  • Enterprise-grade ITSM, for every business Icon
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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: 3,315 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: 155 This Week
    Last Update:
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  • 3
    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: 17 This Week
    Last Update:
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  • 4
    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: 39 This Week
    Last Update:
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  • Test your software product anywhere in the world Icon
    Test your software product anywhere in the world

    Get feedback from real people across 190+ countries with the devices, environments, and payment instruments you need for your perfect test.

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  • 5
    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: 5 This Week
    Last Update:
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  • 6
    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: 5 This Week
    Last Update:
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  • 7
    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: 11 This Week
    Last Update:
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  • 8

    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: 6 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: 5 This Week
    Last Update:
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  • Crowdtesting That Delivers | Testeum Icon
    Crowdtesting That Delivers | Testeum

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  • 10

    FruityOrange

    An operating system written in C & assembly.

    An operating system written in C & assembly. FruityOrange uses the concept of a monolithic kernel and GRUB as bootloader for the kernel and some modules. There is still no release. If you want do try the development-version, get the Sourcecode and build by yourself!
    Downloads: 8 This Week
    Last Update:
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  • 11
    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
    Downloads: 7 This Week
    Last Update:
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  • 12
    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: 1 This Week
    Last Update:
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  • 13
    FreeOS/1
    FreeOS/1 is a Free, Open Source, FreeDOS based Free and Open Source Alternative OS, with open source Microsoft Windows compatibility using HXDOSExtender KernelEx,and ReactOS source code. FreeOS/1 will include new technologies and will be easy to use
    Downloads: 3 This Week
    Last Update:
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  • 14

    WinLynx

    A Linux Operating System based off of openSUSE

    WinLynx is a simple-to-use Linux Operating system based off of openSUSE. Using the KDE4 Desktop Environment makes the GUI look sharp and modern. WinLynx packages, LibreOffice, Mozilla FireFox, and much, much more.... NOTE: WinLynx comes with a default user which is "root". We RECOMMEND creating a new user for personal use. If, you want to use the default "root" user, the password is "linux"
    Downloads: 3 This Week
    Last Update:
    See Project
  • 15
    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: 2 This Week
    Last Update:
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  • 16
    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: 2 This Week
    Last Update:
    See Project
  • 17
    Matrix0s

    Matrix0s

    New Generation Smart GRID-Decentralized Operating System

    Downloads: 2 This Week
    Last Update:
    See Project
  • 18
    **DISCONTINUED** BOS – B.lu operating System, is an operating system dedicated to small microcontrollers and CPUs without MMU. Actually is dedicated to Texas Instruments MSP430 microcontrollers (it can be ported to other CPUs without great changes)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    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: 1 This Week
    Last Update:
    See Project
  • 20
    PlusOS (Plus Operating System)

    PlusOS (Plus Operating System)

    OS bootable from Linux,Windows and others partitions as auxiliary OS

    Plus operating system is hobby project. That's built to run as auxiliary OS with Major OS like Windows and Linux etc..bootable with grub2 and own boot loader.focused on eBook reading software(PDF,EPUB,MOBI,DJVU,CHM...).with programs like calculator, notepad,source code editor, hex viewer, text viewer,image viewer and many games.VESA 32bpp GUI from startup.read-only plus maybe writing support for standard file systems FAT/NTFS/EXT/CDFS.codec for archives(ZIP,RAR,7z,GZ ...).codec for image formats(JPG,BMP,GIF,PNG...).video player or at least thumbnails extract(AVI,MKV,MP4,3GP...). mountable as filesystem from ISO,ISZ file.generic drivers VBE,USB,HD Audio,Keyboard, mouse.bootable on qemu and of course on real computer systems.at least all drivers for one computer (my) this is primary goal. In summary goal is building a stable and usefull OS. A Project By Arshad Latti. Support PlusOS project on patreon https://www.patreon.com/arshadlatti to encourage.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    This FreeDOS distribution's primary focus is to provide a single source for updating or obtaining the latest FreeDOS BASE set, with emphasis on compatibility with ReactOS/WinNT (Win32 ports) and modern 386+ computers. FreeDOS is a trademark of Jim Hall
    Downloads: 0 This Week
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  • 22
    el proyecto A.T.L.D. se trata de crear una distribucion basada en software libre funcional moderna destinada en ordenadores limitados pentuim estara basado usando una distro kernel linux y otra micronucleo match con hurd atld es 100 % software libre
    Downloads: 0 This Week
    Last Update:
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  • 23
    Downloads: 0 This Week
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  • 24
    Aicix is hobby Operating System (OS) of me. It won't be as big as Linux distributions are.
    Downloads: 0 This Week
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    See Project
  • 25

    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: 0 This Week
    Last Update:
    See Project
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