Refolk

Top Operating systems repositories on GitHub

Kernels, microkernels, and OS research projects.

Ranked by stars across 450 repositories tagged operating-system. Refreshed daily.

  1. 1
    HeyPuter/puter40,942 · ⑂ 3,727

    🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.

    • desktop
    • desktop-environment
    • osjs
    • web-desktop
    • webtop
    • cloud-os
  2. 2
    huihut/interview37,781 · ⑂ 8,111

    📚 C/C++ 技术面试基础知识总结,包括语言、程序库、数据结构、算法、系统、网络、链接装载库等知识及面试经验、招聘、内推等信息。This repository is a summary of the basic knowledge of recruiting job seekers and beginners in the direction of C/C++ technology, including language, program library, data structure, algorithm, system, network, link loading library, interview experience, recruitment, recommendation, etc.

    • interview
    • interview-questions
    • interview-practice
    • interview-preparation
    • interviews
    • c
  3. 3
    anoma/anoma33,890 · ⑂ 4,117

    Reference implementation of Anoma

    • cryptography
    • blockchain
    • protocol
    • consensus
    • distributed-systems
    • p2p
  4. 4
    SerenityOS/serenity33,135 · ⑂ 3,326

    The Serenity Operating System 🐞

    • operating-system
    • c-plus-plus
    • os
    • unix
    • desktop-environment
    • kernel
  5. 5
    Awesome-HarmonyOS/HarmonyOS19,870 · ⑂ 3,291

    A curated list of awesome things related to HarmonyOS. 华为鸿蒙操作系统。

    • huawei
    • harmonyos
    • os
    • operating-system
    • iot
    • iot-platform
  6. 6
    reactos/reactos17,494 · ⑂ 2,111

    A free Windows-compatible Operating System

    • operating-system
    • c
    • kernel
    • os
    • osdev
    • x86
  7. 7
    phil-opp/blog_os17,444 · ⑂ 1,202

    Writing an OS in Rust

    • kernel
    • rust
    • operating-system
    • x86-64
  8. 8
    RightNow-AI/openfang17,232 · ⑂ 2,206

    Open-source Agent Operating System

    • agent-framework
    • ai-agents
    • llm
    • mcp
    • open-source
    • openclaw
  9. 9
    redox-os/redox16,281 · ⑂ 997

    Mirror of https://gitlab.redox-os.org/redox-os/redox

    • redox
    • rust
    • microkernel
    • operating-system
    • bsd
    • freebsd
  10. 10

    :books: Learn to write an embedded OS in Rust :crab:

    • rust
    • bare-metal
    • raspberry-pi-3
    • rpi3
    • embedded-rust
    • armv8
  11. 11
    s-matyukevich/raspberry-pi-os13,813 · ⑂ 1,345

    Learning operating system development using Linux kernel and Raspberry Pi

    • raspberry-pi
    • linux-kernel
    • osdev
    • arm
    • operating-system
    • raspberry-pi-3
  12. 12
    tuhdo/os0113,531 · ⑂ 786

    Bootstrap yourself to write an OS from scratch. A book for self-learner.

    • operating-system
    • book
  13. 13

    How to be low-level programmer

    • linux-kernel-hacking
    • c-programming
    • hardware
    • embedded-systems
    • programming-language
    • low-level-programming
  14. 14

    Dive into this repository, a comprehensive resource covering Data Structures, Algorithms, 450 DSA by Love Babbar, Striver DSA sheet, Apna College DSA Sheet, and FAANG Questions! 🚀 That's not all! We've got Technical Subjects like Operating Systems, DBMS, SQL, Computer Networks, and Object-Oriented Programming, all waiting for you.

    • interview-questions
    • dsa
    • dbms
    • sql
    • aptitude
    • algorithms
  15. 15
    wolverinn/Waking-Up10,261 · ⑂ 1,837

    计算机基础(计算机网络/操作系统/数据库/Git...)面试问题全面总结,包含详细的follow-up question以及答案;全部采用【问题+追问+答案】的形式,即拿即用,直击互联网大厂面试;可用于模拟面试、面试前复习、短期内快速备战面试...

    • interview
    • computer-science
    • computer-network
    • operating-system
    • database
    • git
  16. 16
    bottlerocket-os/bottlerocket9,587 · ⑂ 577

    An operating system designed for hosting containers

    • operating-system
    • containers
    • linux
    • rust
  17. 17
    ublue-os/bazzite8,388 · ⑂ 864

    Bazzite makes gaming and everyday use smoother and simpler across desktop PCs, handhelds, tablets, and home theater PCs.

    • desktop
    • fedora-linux
    • gaming
    • htpc
    • oci-image
    • operating-system
  18. 18
    NodeOS/NodeOS7,340 · ⑂ 622

    Lightweight operating system using Node.js as userspace

    • nodeos
    • javascript
    • operating-system
    • nodejs
  19. 19
    klange/toaruos6,709 · ⑂ 542

    A completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and userspace including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network stack, etc.

    • operating-system
    • toaruos
    • operating-systems
    • c
    • c-library
    • compositor
  20. 20
    ravynsoft/ravynos6,695 · ⑂ 226

    An open-source OS project that aims to provide source and binary compatibility with macOS® and a similar user experience.

    • freebsd
    • macos
    • cocoa
    • objective-c
    • desktop
    • osdev
  21. 21
    yourtion/30dayMakeOS6,395 · ⑂ 1,462

    《30天自制操作系统》源码中文版。自己制作一个操作系统(OSASK)的过程

    • c
    • os
    • diy
    • osask
    • osx
    • linux
  22. 22
    tock/tock6,299 · ⑂ 827

    A secure embedded operating system for microcontrollers

    • embedded
    • operating-system
    • rust
    • cortex-m
    • kernel
    • tock
  23. 23
    includeos/IncludeOS5,231 · ⑂ 389

    A minimal, resource efficient unikernel for cloud services

    • unikernel
    • virtualization
    • operating-system
    • cpp
  24. 24
    armbian/build5,221 · ⑂ 2,960

    The official build framework for the Armbian Linux distribution. This repository contains the complete toolchain and scripts required to compile custom OS images from source, including kernel configuration, U-Boot handling, and board-specific tweaks for various ARM and ARM64 single-board computers.

    • kernel-compilation
    • arm
    • ubuntu
    • debian
    • kernel
    • lightweight
  25. 25
    oshi/oshi5,207 · ⑂ 916

    Native Operating System and Hardware Information

    • operating-system
    • hardware-information
    • java
    • jna
    • serialnumbers
    • cpu-usage

Find engineers shipping Operating systems

The list above ranks the most-starred public repositories tagged with the Operating systems topic, drawn from the public GitHub graph. Across 450 repositories tagged this way, the maintainers and top contributors are a tight cluster of the people actually building Operating systems.

Looking for engineers who’ve worked on Operating systems for real, not just listed it on LinkedIn? The fastest path is the contributor list of these repos. Their commits, issues, and READMEs are public proof of depth.

Refolk turns this list into a search. Ask for “maintainers of top Operating systems repos who are hiring”, Operating systems engineers in San Francisco”, or “founders shipping Operating systems” and Refolk returns a ranked shortlist with sources.

How this list is built

Refolk searched GitHub for public repositories tagged with the Operating systems topic, ranked them by stargazer count, and kept those with at least 50 stars. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 05:55:11 GMT

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