Showing 248 open source projects for "os assembly"

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  • 1
    os-tutorial

    os-tutorial

    How to create an OS from scratch

    ...The project uses x86 assembly and C to illustrate concepts, making it accessible to students and hobbyists interested in low-level programming. By compiling and running the examples with tools like QEMU, learners gain hands-on experience with OS fundamentals. With its structured lessons and approachable explanations, the repository has become a widely recommended resource for operating system beginners.
    Downloads: 1 This Week
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  • 2
    Scpsec OS
    Scpsec OS is a modern, lightweight, Debian-based Linux distribution designed to provide a fast, stable, and user-friendly desktop computing experience. Built on the reliability of Debian, Scpsec OS combines performance, simplicity, and security into an operating system suitable for everyday users, developers, students, and IT professionals.
    Downloads: 82 This Week
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  • 3
    Smaller C

    Smaller C

    Simple C compiler

    Smaller C is a simple and small single-pass C compiler, currently supporting most of the C language common between C89/ANSI C and C99 (minus some C89 and plus some C99 features). Currently, it generates 16-bit and 32-bit 80386+ assembly code for NASM that can then be assembled and linked into DOS, Windows, Linux and Mac OS X programs. (You may use YASM or FASM instead of NASM) Code generation for MIPS CPUs is also supported (primarily for RetroBSD). The compiler is capable of compiling itself. The core compiler comes with a preprocessor (ucpp), a linker, and a compiler driver (the driver invokes the preprocessor, the core compiler, the assembler, and the linker and supports options similar to those of gcc).
    Downloads: 5 This Week
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  • 4
    Objeck

    Objeck

    Objeck is a modern object-oriented programming language

    General-purpose object-oriented and functional programming language. Designed to be intuitive, lightweight, cross-platform and fast. The Objeck compiler produces two types of binaries. The first is an executable and the second type is a library. Libraries can be linked into executables by passing the names of libraries to the compiler. Objeck can be built for a variety of targets. The language is implemented in C++, assembly (i.e., generated machine code) and assisted by code generators for...
    Downloads: 0 This Week
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  • 5
    Flash Linux 0.11 Talk

    Flash Linux 0.11 Talk

    Annotated Unix system source code

    ...The materials break down historically compact and dense code into digestible segments, with diagrams and call flows that trace execution from bootloader to user space. By focusing on a small, early kernel, the series reveals core OS concepts without the complexity of modern subsystems. It highlights how segmentation and paging cooperate, how system calls are dispatched, and how context switches and signals work in practice. The commentary ties C and assembly listings back to architecture specifics, making the hardware–software interface concrete. For learners, it serves as a guided tour that builds intuition for operating system design and prepares them to tackle contemporary kernels with better mental models.
    Downloads: 0 This Week
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  • 6
    MacFCEU

    MacFCEU

    NES/Famicom emulator based on FCE Ultra.

    An updated Mac OS Classic/Carbon-specific port of FCE Ultra 0.98.13, the Nintendo Entertainment System/FamilyComputer emulator, and beyond.  This emulator is meant for older Macs, pre-OS X.
    Downloads: 4 This Week
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  • 7

    ACME Cross-Assembler

    multi-platform cross assembler for 6502/6510/65816 cpu

    ACME is a free cross assembler released under the GNU GPL. It can produce code for the following processors: 6502, 6510 (including illegal opcodes), 65c02 and 65816. ACME supports the standard assembler stuff like global/local/anonymous labels, offset assembly, conditional assembly and looping assembly. It can include other source files as well as binaries while assembling. Calculations can be done in integer or float mode. Oh, and it is fast.
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    Downloads: 42 This Week
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  • 8
    BaltaOS
    BaltaOS: Uno de los OS más conocidos en Argentina. También uno de los OS más intuitivos para el usuario. Hecho en: Argentina, Santa Fe - Piso 1 Saavedra y chacabuco al 1827 Un pequeño grupo de persnas para el desarrolo del mismo.
    Downloads: 0 This Week
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  • 9
    BitVisor is a tiny hypervisor initially designed for mediating I/O access from a single guest OS. Its implementation is mature enough to run Windows and Linux, and can be used as a generic platform for various research and development projects.
    Downloads: 6 This Week
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  • 10
    ChibiOS/RT free embedded RTOS
    ChibiOS/RT is a free and efficient RTOS designed for deeply embedded applications. It offers a comprehensive set of kernel primitives and supports many architectures: ARM7, Cortex-M0, Cortex-M3, Cortex-M4, PowerPC e200z, STM8, AVR, MSP430, ColdFire, H8S, x86.
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    Downloads: 54 This Week
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  • 11
    This is one of the most popular Doom source ports. It is available for DOS, Windows, Linux and Mac OS X, and should build on any POSIX platform which supports SDL. It enhances Doom with things like TCP/IP networking, OpenGL renderer, Heretic support and much more.
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    Downloads: 78 This Week
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  • 12
    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...
    Downloads: 51 This Week
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  • 13
    libjpeg-turbo

    libjpeg-turbo

    SIMD-accelerated libjpeg-compatible JPEG codec library

    libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, and PowerPC systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals...
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    Downloads: 36,701 This Week
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  • 14

    open-watcom

    Open Watcom C/C++ compilers and tools Fork

    C/C++ compilers and tools to compile and build for targets DOS 16/32-bit, RDOS, Windows 16/32-bit, OS/2 16/32 bit, Linux 32-bit (x86), Netware running on host OS DOS, Windows 16/32/64-bit, OS/2, Linux 32/64-bit (x86/x64) Open Watcom is now completely moved to GitHub Open Watcom 2.0 https://github.com/open-watcom/open-watcom-v2#open-watcom-v2-fork Open Watcom 1.9 https://github.com/open-watcom/open-watcom-1.9
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    Downloads: 72 This Week
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  • 15
    CSAPP-Labs

    CSAPP-Labs

    Solutions and Notes for Labs of Computer Systems

    ...By actually building and debugging code that runs close to hardware, learners acquire intuition about performance trade-offs, bit-level manipulation, stack frame layout, and how compilers and OS features influence execution.
    Downloads: 2 This Week
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  • 16

    SerpaeOS

    A cute and educational x86 OS

    SerpaeOS is a free, open-sourced x86 OS. It aims to provide a good resource for OSDevers to observe how certain features are implemented. The latest version is 23.2.1 Have a tip? Found a bug? Have a comment? Want to help? Contact us at serpaeos.devers@gmail.com Buy me a coffee! :) https://bmc.link/serpaeosdeL System Requirments: *4 GB Memory *4GB minimum PATA Hard Disk connected to the master slot on the primary IDE controller. *x86 processor
    Downloads: 0 This Week
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  • 17
    BRUTAL

    BRUTAL

    An operating system inspired by brutalist design

    Brutal is a modern, experimental operating system that blends Unix principles with retro aesthetics and a unique design philosophy. Written from scratch in C and assembly, Brutal aims to offer a clean and consistent experience both at the system level and user interface level, featuring its own GUI, kernel, and userland tools. It’s inspired by classic systems like Plan 9 and early UNIX variants but reimagined with a focus on simplicity, beauty, and cohesive tooling. The OS is modular and composable, with everything built to feel like it belongs to the same ecosystem.
    Downloads: 0 This Week
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  • 18
    OSLib is a set of functions and C headers to provide complete coverage of the RISC OS application programmer's interface in C. It provides access from C code to all RISC OS system calls (SWIs) which is efficient, type-safe, and obvious.
    Downloads: 22 This Week
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  • 19

    SpecOS

    A multi-threaded-style OS for the Spectrum +3

    A multi-threaded-style OS for the Spectrum +3. Based on a kernel/userland model, it decouples the kernel implementation from the run-time system call mechanism, and provides for some POSIX-style functions. A file descriptors layer provides abstraction for easy file redirection. Userland processes are relocatable, and have no knowledge of the kernel or memory layout, leaving the flexibility to change the memory paging model without requiring a recompile of all userland programs.
    Downloads: 0 This Week
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  • 20
    raspberry-pi-os

    raspberry-pi-os

    Learning operating system development using Linux kernel and Raspberry

    This project provides a step-by-step educational guide on building a simple operating system kernel entirely from scratch, specifically targeting the Raspberry Pi 3. The operating system, referred to as RPi OS, is inspired by the Linux kernel but remains intentionally minimal to focus on clarity and teaching fundamental OS concepts. Each lesson introduces a kernel feature and demonstrates its implementation within RPi OS, followed by a comparison to how the same concept is realized in the...
    Downloads: 2 This Week
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  • 21

    OpenFSL

    An open source filesystem library

    OpenFSL is an os-independent file system library. It provides file system control with customizable disk control. Currently supports MBR and FAT32 partially.
    Downloads: 0 This Week
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  • 22
    Emerald

    Emerald

    An operating system written in C

    emerald is a minimalistic Unix-like operating system kernel developed for x86_64 systems, focused on being lightweight, modular, and understandable. Written in C and assembly, emerald serves as a learning tool for OS enthusiasts who want to explore kernel design from scratch. It includes basic components such as multitasking, paging, interrupts, and system calls, while maintaining a clear and concise codebase. Emerald is a strong starting point for building more complex systems or experimenting with new OS features.
    Downloads: 0 This Week
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  • 23
    OS Zero

    OS Zero

    Simplest kernel for cooperative multithreading

    Simplest of possible ways to multithreading on the smallest microcontrollers. This project is demonstration the programming technique of the multithreading with polling the system state. Published code debugged and ready to use in your projects.
    Downloads: 0 This Week
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  • 24
    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...
    Downloads: 1 This Week
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  • 25
    Haiway

    Haiway

    Haiway Edge Computing OS

    Haiway is a simple operating system written from scratch in C with the goal of helping learners understand OS development fundamentals. Targeting x86_64 systems and running in a bare-metal environment like QEMU, Haiway implements its own bootloader, kernel, and essential subsystems such as memory management, interrupt handling, and user process execution. Designed to be lightweight and readable, the project emphasizes clarity and modularity, making it a useful base for experimentation or...
    Downloads: 0 This Week
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