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ReactOS

Organization

Public GitHub footprint of ReactOS

@reactos
View profile on GitHub

38

Public repositories

18,477

Total stars

992

Followers

The ReactOS organization on GitHub hosts a diverse array of projects primarily written in C, C#, C++, PHP, HTML, and Go. Notable repositories include the core ReactOS operating system, as well as tools like the ReactOS Build Environment and the ReactOS Application Manager database, showcasing the community's commitment to creating a Windows-compatible operating system.

Top languages

C 8C# 6C++ 4PHP 3HTML 2Go 2Python 2JavaScript 1

Public repositories

reactos

17,624

A free Windows-compatible Operating System

C
Updated Jun 12, 2026

reactos-deprecated-gitsvn-dont-use

293

Abandoned ReactOS git-svn mirror, left only as a base for existing forks. Please use reactos.git for new contributions!

C
Updated Feb 1, 2026

rapps-db

116

Database for the ReactOS Application Manager (rapps)

Unknown Language
Updated Jun 10, 2026

RosBE

61

ReactOS Build Environment for various platforms

C
Updated May 24, 2026

web-content

44

ReactOS Website powered by the Hugo Static Site Generator

HTML
Updated Jun 3, 2026

reactosdbg

35

Graphical Debugging Shell for ReactOS Kernel Debugger (KDBG)

C#
Updated May 13, 2026

Qemu_GUI

26

GUI for QEMU

C#
Updated Feb 1, 2026

web

18

PHP subsystems of the ReactOS Website

PHP
Updated May 24, 2026

Message_Translator

16

Translates ReactOS and Windows error codes into readable messages

C#
Updated May 24, 2026

wine

16

Wine / Wine-Staging fork of the ReactOS Project (master is mirror of git://source.winehq.org/git/wine.git)

C
Updated Feb 1, 2026

developer-web-interface

15

Web Interface for ReactOS CI services

JavaScript
Updated May 24, 2026

syzkaller-ros

14

"Porting Syzkaller to ReactOS" GSoC 2020 Project by @freakston

Go
Updated Feb 1, 2026

syzkaller

13

syzkaller is an unsupervised coverage-guided kernel fuzzer

Go
Updated Jun 5, 2026

Release_Engineering

12

Resources for engineering ReactOS Releases

Shell
Updated May 28, 2026

buildbot_config

12

Configuration for the BuildBot at https://build.reactos.org

Python
Updated May 9, 2026

wallpapers

11

This repository contains wallpapers for use in rapps

CMake
Updated Jun 11, 2026

documentation

11

ReactOS Documentation Repository

HTML
Updated Feb 1, 2026

ccache

10

ccache - a fast compiler cache

C
Updated Feb 1, 2026

sysreg2

10

Controls and monitors ReactOS VMs for Regression Testing on Unix-based platforms

C
Updated Feb 1, 2026

git-tools

10

Tools for Git used in the ReactOS Infrastructure

PHP
Updated Feb 1, 2026

ahk_tests

9

AutoHotKey-based Application Regression Tests for ReactOS

AutoHotkey
Updated Feb 1, 2026

RosTE

9

ReactOS Testing Environment

C#
Updated Feb 1, 2026

rosev_ircsystem

9

A multiplatform IRC Server written from scratch for closed user groups. Used inhouse for ReactOS Deutschland e.V. General Assemblies.

C++
Updated Feb 1, 2026

bochspwn-reloaded

9

"Detect kernel information disclosure by bochspwn-reloaded" GSoC 2020 project by @khanhnt2

C++
Updated Feb 1, 2026

packmgr

8

Former ReactOS Package Manager - replaced by ReactOS Application Manager (rapps)

C++
Updated Feb 15, 2026

ninja

7

a small build system with a focus on speed

Unknown Language
Updated May 24, 2026

press-media

7

Official ReactOS Press Media

Rich Text Format
Updated Feb 3, 2026

monitoring

7

Monitoring plugins used in the ReactOS Infrastructure

C
Updated Feb 1, 2026

mattermost-extensions

7

Mattermost extensions for the ReactOS Mattermost Server at https://chat.reactos.org

PHP
Updated Feb 1, 2026

irc

6

IRC Bots by the ReactOS Project

C#
Updated Feb 1, 2026

vmwaregateway

6

Modified version of Volkmar Uhlig's vmwaregateway tool

C++
Updated Feb 1, 2026

CMake

6

Patched versions of CMake for ReactOS needs

C
Updated Feb 1, 2026

web-playground-config

5

Configuration for the Website Playground, check https://web-content.reactos.org

Python
Updated May 24, 2026

sysreg3

4

Controls and monitors ReactOS VMs for Regression Testing on Windows platforms. No longer maintained, use sysreg2 instead.

C#
Updated Feb 1, 2026

project-tools-archive

4

Remaining files from the former "project-tools" SVN repository. Left only for reference, development is continued in the individual repositories.

Batchfile
Updated Feb 1, 2026

rosev_jameicaplugin

4

Plugin integrating into Jameica and JVerein for managing ReactOS donations

Java
Updated Feb 1, 2026

wpa_supplicant-reactos

2

wpa_supplicant for Windows modified for ReactOS

Unknown Language
Updated Feb 1, 2026

rosget-pkgs

1

No description provided for this repository.

Unknown Language
Updated Feb 1, 2026

Frequently asked questions

What does reactos build on GitHub?

ReactOS builds on GitHub a free Windows-compatible operating system using multiple programming languages, including C and C#. Their repositories also feature tools like the ReactOS Build Environment and various application management resources.

Which programming languages does reactos use?

The primary programming languages used in ReactOS repositories include C, C#, C++, PHP, HTML, and Go. This variety supports the development of both the operating system and its associated tools.

Are reactos's repositories public?

Yes, all of ReactOS's repositories are public on GitHub. This transparency allows contributors to engage with the project and access a wide range of resources related to the development of the ReactOS operating system.

Is this exposure intended?

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