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.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Try Free
  • 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: 2,833 This Week
    Last Update:
    See Project
  • 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.
    Leader badge
    Downloads: 254 This Week
    Last Update:
    See Project
  • 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: 18 This Week
    Last Update:
    See Project
  • 4
    operating system simple

    operating system simple

    Operating System Guide Dari 0

    operating_system_guide is a curated, beginner-friendly resource aimed at helping aspiring developers learn how to create an operating system from scratch. Maintained by AzkaDev, the guide collects educational materials, links, and code snippets that walk learners through each major component of OS development—from bootloaders to kernel structures and system calls. While still evolving, the guide acts as a roadmap and inspiration hub for those wanting to explore low-level systems programming with a hands-on approach.
    Downloads: 2 This Week
    Last Update:
    See Project
  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

    Automatic backups, patching, replication, and failover. Focus on your app, not your database.

    Cloud SQL handles your database ops end to end, so you can focus on your app.
    Try Free
  • 5
    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.
    Downloads: 36 This Week
    Last Update:
    See Project
  • 6
    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:
    See Project
  • 7
    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: 6 This Week
    Last Update:
    See Project
  • 8
    Haiku is an open-source operating system currently in development designed from the ground up for desktop computing.
    Leader badge
    Downloads: 10 This Week
    Last Update:
    See Project
  • 9
    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: 14 This Week
    Last Update:
    See Project
  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
    Try It Free
  • 10
    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: 13 This Week
    Last Update:
    See Project
  • 11
    Downloads: 10 This Week
    Last Update:
    See Project
  • 12
    BeepOS13
    A systemd less small to medium scale server Operating System based on Devuan 6. All popular packages packed into a live boot environment, just boot, log and go!
    Leader badge
    Downloads: 9 This Week
    Last Update:
    See Project
  • 13
    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.
    Leader badge
    Downloads: 9 This Week
    Last Update:
    See Project
  • 14

    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.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    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: 3 This Week
    Last Update:
    See Project
  • 16

    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
    Last Update:
    See Project
  • 17
    Matrix0s

    Matrix0s

    New Generation Smart GRID-Decentralized Operating System

    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    neos

    neos

    neos, a new OS to the world!

    neosmium's neos is a new OS to the world. It has been developed by a group of a few students of Brainware Group of Institutions (India). It is a free Operating System and based on Debian Linux with the architecture of Ubuntu Linux. It's now capable to surf the best performance and featured services to your daily requirements which you can expect from your PC or tablet. For more: facebook,com/myneos
    Downloads: 3 This Week
    Last Update:
    See Project
  • 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: 2 This Week
    Last Update:
    See Project
  • 20
    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: 2 This Week
    Last Update:
    See Project
  • 21
    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: 2 This Week
    Last Update:
    See Project
  • 22
    Downloads: 2 This Week
    Last Update:
    See Project
  • 23
    Allo stato attuale Internet non sara totalmente libera fintantochč non saranno completamente libere ed accessibili le strutture fisiche che lo trasportano.CityLAN vuole essere il manifesto di questa libertŕ...
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    This is an Open Source experimental OS with no kernel.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    An open source operating system for x86.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
Monday.com Logo