reactos/reactos

🧭 What Does reactos Actually Do? — A Plain-English Guide

In simple words: reactos is a tool made for people who build software, for running a computer as its main system software. It is completely free and open source — its code is public on GitHub, where 18,416 people have bookmarked it as worth using.

Step by step — how you would actually use it

1. An honest note first: reactos is made for programmers and system administrators, not for everyday clicking.
2. They install it on their computer or server, following its README.
3. They connect it to their project or system, usually with a few settings or commands.
4. From then on, it helps them with running a computer as its main system software as part of their daily technical work.
5. Everyday users meet this tool only indirectly — inside the apps and websites it helps to build and keep running.

💡 A real-life example: Early users try projects like this to get tomorrow's features today, accepting that things can still be rough around the edges.

RepoEasy wrote this simple explanation from the project's public data — its category, topics and description — so a beginner can understand it before downloading anything. For exact technical details, the project's own README (linked below) is the final word.

Quick Overview — What is this tool?

A free Windows-compatible Operating System

This is the project's own description from GitHub — we show it as-is rather than inventing details.

What Can You Do With It?

• Download and run the complete source code on your own computer or server.
• Study how it works — every line of code is public.
• Use it in your own projects, subject to its license terms (see cost section below).
• Its GitHub topics describe its main areas: cdriversgplhacktoberfestkerneloperating-systemososdevreactoswin32win32apiwindowsx86

Who Is This For?

This project is listed under Operating Systems in Other & Emerging Categories, a category made for early adopters and the curious.

Do I need coding knowledge? Advanced Developer Tool. (Estimate based on project type: Systems-level project aimed at experienced developers. Always confirm from the repo's README.)

Is It Free?

The source code is released under the GPL-2.0 license. Open-source licenses like this usually allow free use, including commercial use — but always read the actual license file in the repository before relying on it. Note: the code being free does not mean hosted services, APIs or infrastructure around it are free.

Is It Actively Maintained?

Activity level: Very active · Last code update: 01 Nov 2026 · Created: 03 Oct 2017 · Open issues: 122

How to Get Started

1. Open the repository on GitHub and read its README — that is the official, verified setup guide.
2. To download the full code, generate this repository's public link below and run the clone command in a terminal:

Official links: Official Website ↗ · Releases ↗ · Documentation (README) ↗

We never publish installation steps we have not verified — the README above is the source of truth.

Repository Statistics

⭐ 18416 stars · 🍴 2325 forks · 🐛 122 open issues · 💻 Language: C · 📄 License: GPL-2.0 · Default branch: master