redox-os/redox

Analysis updated 2026-06-24

★ 16,312RustAudience · developerComplexity · 5/5LicenseSetup · hard

Mindmap

mindmap
  root((redox))
    Inputs
      Source repos
      Build configs
    Outputs
      Bootable OS image
      VM disk
    Use Cases
      Run in QEMU
      Install on hardware
      Study microkernel OS
    Tech Stack
      Rust
      Microkernel
      Make
    Components
      RedoxFS
      Orbital
      Ion shell
      relibc

mindmap root((redox)) Inputs Source repos Build configs Outputs Bootable OS image VM disk Use Cases Run in QEMU Install on hardware Study microkernel OS Tech Stack Rust Microkernel Make Components RedoxFS Orbital Ion shell relibc

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What do people build with it?

USE CASE 1

Build a bootable Redox OS image and run it inside QEMU

USE CASE 2

Install Redox on a spare laptop to try a Rust-based microkernel OS

USE CASE 3

Study a working microkernel design with a Unix-like userland in Rust

What is it built with?

RustMakeQEMU

How does it compare?

	redox-os/redox	clap-rs/clap	rust-lang/rust-analyzer
Stars	16,312	16,381	16,420
Language	Rust	Rust	Rust
Setup difficulty	hard	easy	easy
Complexity	5/5	2/5	4/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

Building Redox needs a Linux host with many toolchain dependencies, and the first compile of the full image is long.

MIT license: use, modify, and distribute the code freely for any purpose, as long as you keep the copyright notice.

In plain English

Redox is a full-featured open-source operating system written in Rust, a programming language designed with a strong emphasis on safety and performance. This GitHub repository is specifically the build system for Redox, meaning it contains the tooling used to compile and assemble the OS rather than the OS kernel code itself (the kernel and other components live in separate repositories on GitLab). Redox uses a microkernel architecture, a design where the operating system's core is kept as small as possible and most services (drivers, file systems, etc.) run as separate user-space processes rather than inside the kernel. This approach is generally more secure and easier to maintain than a traditional monolithic kernel, though historically harder to achieve good performance with. Redox draws inspiration from operating systems like seL4, MINIX, Plan 9, and Linux. It is a complete operating system, not just a kernel, providing its own file system (RedoxFS), a display server and window manager (Orbital), a shell (Ion), a C standard library written in Rust (relibc), a package manager, and a desktop environment using COSMIC apps. It aims for source-code compatibility with many Rust, Linux, and BSD programs, meaning programs written for those systems can potentially be ported. You can run Redox in a virtual machine (a simulated computer inside your existing computer) or install it on real hardware. It is licensed under the MIT license and is developed by an active open-source community.

Copy-paste prompts

Prompt 1

Walk me through cloning the Redox build system and producing a QEMU-bootable image step by step

Prompt 2

Compare the Redox microkernel architecture to Linux's monolithic kernel, with concrete examples from the repo

Prompt 3

Help me write a small userland program in Rust that runs on Redox and uses RedoxFS

Prompt 4

Set up a development workflow where I can rebuild just one Redox component (like Orbital) and rerun in QEMU

Frequently asked questions

What is redox?

Redox is a full operating system written in Rust with a microkernel design. This repo is the build system that compiles the kernel and userland into a runnable image.

What language is redox written in?

Mainly Rust. The stack also includes Rust, Make, QEMU.

What license does redox use?

MIT license: use, modify, and distribute the code freely for any purpose, as long as you keep the copyright notice.

How hard is redox to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is redox for?

Mainly developer.

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