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ReactOS Foundation

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26 reviews
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4.1
Serving customers since
2002
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ReactOS

26 reviews

ReactOS is a free and open-source operating system designed to be compatible with Windows applications and drivers. It aims to provide a familiar user experience by replicating the look and feel of Windows, enabling users to run their favorite Windows software in an open-source environment. ReactOS is developed from scratch, ensuring that it is not a derivative of Linux, but a standalone system with its own architecture. Key Features and Functionality: - Windows Compatibility: ReactOS is capable of running a wide range of Windows applications and drivers, offering users the flexibility to use software they are accustomed to. - Familiar Interface: The operating system mirrors the appearance and functionality of Windows, reducing the learning curve for new users. - Open Source: Being open-source, ReactOS allows users and developers to view, modify, and distribute its source code, fostering a collaborative development environment. - Active Community: The project is supported by a global community, providing opportunities for collaboration, skill enhancement, and contribution to the development of the operating system. Primary Value and User Solutions: ReactOS addresses the need for a free and open-source operating system that maintains compatibility with Windows software and drivers. This is particularly beneficial for users and organizations seeking an alternative to proprietary systems without sacrificing the ability to run essential Windows applications. Additionally, ReactOS serves as an educational platform for those interested in learning about operating system development and Windows internals, offering practical experience in a real-world project.

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ReactOS Foundation Reviews

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Verified User in Broadcast Media
UB
Verified User in Broadcast Media
01/30/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

A Lightweight Open-Source Platform for Windows-Compatible Legacy Software

What I like best about ReactOS is its goal of being fully compatible with Windows applications and drivers while remaining open-source and lightweight. It offers a familiar Windows-like environment without licensing costs, gives transparency and control over the OS, and is especially useful for learning, experimentation, and running legacy software on modest hardware.
SB
Sourabh B.
01/23/2026
Validated Reviewer
Review source: Organic Review from User Profile

Open-Source Windows Compatibility in a Lightweight, Familiar Environment

The best thing about ReactOS is its vision to provide Windows application and driver compatibility while being completely open source. It allows users to explore a familiar Windows-like environment without licensing costs. Its lightweight nature and open codebase make it very useful for learning, experimentation, and testing legacy applications.
Verified User in Computer Software
UC
Verified User in Computer Software
12/11/2025
Validated Reviewer
Review source: G2 invite
Incentivized Review

Great for Old Hardware, But Limited Support

ideal for reviving old hardware and open-source Windows-like OS that runs old Windows apps and drivers

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HQ Location:
Amsterdam, North Holland

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@reactos

What is ReactOS Foundation?

ReactOS Foundation is an organization dedicated to the development and promotion of ReactOS, an open-source operating system designed to be compatible with Microsoft Windows applications and drivers. The foundation supports the ReactOS community by providing resources, organizing development efforts, and fostering collaboration among developers and volunteers. Its goal is to create a free and open-source alternative to Windows, allowing users to run Windows software without relying on a proprietary operating system.

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Year Founded
2002