Software Alternatives, Accelerators & Startups

ReactOS VS AtlasOS

Compare ReactOS VS AtlasOS and see what are their differences

ReactOS logo ReactOS

ReactOS is a free, modern operating system in alpha stage, based on the design of Windows XP/2003.

AtlasOS logo AtlasOS

An open and transparent modification of the Windows 10 operating system, designed to optimize performance and latency.
  • ReactOS Landing page
    Landing page //
    2021-09-21
  • AtlasOS Landing page
    Landing page //
    2024-06-26

ReactOS features and specs

  • Open Source
    ReactOS is an open-source operating system, which means its source code is freely available for anyone to view, modify, and distribute. This allows developers and contributors to participate in its development and enhancement.
  • Windows Compatibility
    ReactOS aims to be binary-compatible with Windows, especially Windows Server 2003, meaning it can run many Windows applications and drivers without modification. This could be beneficial for users who rely on legacy Windows software.
  • Lightweight
    ReactOS is designed to be lightweight, requiring fewer system resources compared to modern Windows operating systems. This makes it suitable for older hardware that may not support contemporary operating systems efficiently.
  • Freedom from Licensing Costs
    Being free and open source, ReactOS eliminates the cost associated with purchasing Windows licenses, providing an alternative for users who wish to avoid these costs.

Possible disadvantages of ReactOS

  • Incomplete Development
    ReactOS is still in the alpha stage of development, which means it is not yet stable or feature-complete. This can lead to various issues such as system crashes, incomplete features, and compatibility problems.
  • Limited Application Support
    Despite its goal of Windows compatibility, ReactOS does not support all Windows applications and drivers, particularly newer ones that require features not yet implemented in ReactOS.
  • Lack of Commercial Support
    Unlike Windows, which has extensive commercial support from Microsoft and third-party service providers, ReactOS lacks official commercial support, which may be a concern for enterprise environments.
  • Security Concerns
    As ReactOS is still under development, it may not have implemented all necessary security features and updates that a more mature operating system might have, potentially leading to security vulnerabilities.

AtlasOS features and specs

  • Performance Optimization
    AtlasOS is designed to deliver a streamlined Windows experience by removing unnecessary components and services, resulting in faster performance and improved system responsiveness.
  • Enhanced Privacy
    The OS minimizes telemetry and data collection features found in standard Windows installations, offering users a more privacy-focused operating system.
  • Reduced Bloatware
    By eliminating pre-installed applications and features that users may not need, AtlasOS offers a cleaner and more efficient system.
  • Customizability
    AtlasOS allows users to have more control over installed components and services, providing a highly customizable operating environment tailored to individual needs.

Possible disadvantages of AtlasOS

  • Limited Support
    As a customized version of Windows, AtlasOS may not receive the same level of official support, security updates, or patches as standard Windows installations.
  • Compatibility Issues
    Removing certain Windows components may lead to incompatibility with some software applications or hardware, potentially causing functionality issues.
  • User Expertise Required
    Users may need some technical knowledge to install and maintain the system, which might not be suitable for inexperienced users or those who prefer plug-and-play solutions.
  • Potential Instability
    Modifying the original operating system can lead to unforeseen instability or reliability issues, especially after Windows updates or when installing third-party software.

Analysis of ReactOS

Overall verdict

  • ReactOS is a promising project with potential, but it is still in the alpha stage of development. This means it may not be stable enough for everyday use and might lack support for some hardware and software. While it offers an interesting alternative to Windows, users seeking stability and complete compatibility may find it falls short.

Why this product is good

  • ReactOS is an open-source operating system intended to be binary-compatible with applications and device drivers made for Microsoft Windows. The project aims to provide users with a free alternative to Windows, which can run Windows applications natively without the need for emulation or virtualization.

Recommended for

  • Technology enthusiasts who enjoy testing and contributing to open-source projects.
  • Developers interested in operating system design and contributing to an open-source effort.
  • Users looking to experiment with a Windows-compatible OS alternative for non-critical tasks.

ReactOS videos

ReactOS Demo

More videos:

  • Review - ReactOS 0.4.12 Review - Window Snapping, New Fonts, New Looks!
  • Review - ReactOS Is An Open Source Windows-Inspired Operating System

AtlasOS videos

AtlasOS Review

Category Popularity

0-100% (relative to ReactOS and AtlasOS)
Linux
81 81%
19% 19
Operating Systems
78 78%
22% 22
Linux Distribution
73 73%
27% 27
Monitoring Tools
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, ReactOS should be more popular than AtlasOS. It has been mentiond 78 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ReactOS mentions (78)

  • Microsoft Needs Windows Lite
    There is already a "Windows Lite", and it's called ReactOS [0]. Except, the last thing we need is for Microsoft to own / embrace-extend-exterminate this. It's best that it's kept as an independent project, enabling developers to target the Windows API if they feel like it, while ensuring that they only target the Wine-compatible parts of it, which then enables their software to also run seamlessly on other... - Source: Hacker News / 21 days ago
  • Microsoft's "Fix" for Windows 11: Flowers After the Beating
    Kinda off-topic, but I wonder if a hypothetical OS that reimplements the Windows APIs (like ReactOS[0], but with perfect modern hardware support) would be better for end users than a Linux distro with a modern DE. In the past, this hypothetical OS would be a revolution. But I feel that, in recent years, this gap is not as big anymore and Linux supports way more apps than in the past. Such an OS might even not be... - Source: Hacker News / 4 months ago
  • Not the Future
    On topic of less user-hostile OS , I wonder how this guys are doing: https://reactos.org/ https://elementary.io/. - Source: Hacker News / 7 months ago
  • Using GNU toolchain for Windows kernel-mode drivers
    Compiling into object code is easy but linkig is tricky. For reference of possilbe options, I used an example from ReactOS project. ReactOS is the only working (sort of) full reverse-engineered NT operating system kernel. It is a cool project. ReactOS Github repo has a collection of build options for kernel-mode drivers that can be carved out of CMake files. - Source: dev.to / 9 months ago
  • YouTube is taking down videos on performing nonstandard Windows 11 installs
    Would this help you? https://reactos.org/ This is an open source reimplementation of winxp. I think they can even run drivers made for windows now. - Source: Hacker News / 9 months ago
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AtlasOS mentions (42)

  • Win11Debloat โ€“ declutter and improve your Windows experience
    I've had great experience with Windows 11 LTSC and Atlas OS https://atlasos.net/. - Source: Hacker News / 9 months ago
  • My Windows Computer Just Doesn't Feel Like Mine Anymore
    Been trying out AtlasOS recently (in a VM), which is one of those Open Source projects for debloating Windows: https://atlasos.net It's been pretty good so far, and makes Win 11 seem like a usable desktop rather than the piece of shit that MS wants to inflict on people. Linus Tech Tips reviewed it a while back, and gave it the thumbs up: https://www.youtube.com/watch?v=dc7CIkZcWYE --- The earliest versions of... - Source: Hacker News / about 2 years ago
  • Microsoft's AI chatbot will 'recall' everything you do on its new PCs
    Probably wouldn't fly for a work laptop, but I've been setting up Windows VMs recently using the "AtlasOS" thing and it seems to strip out all of the MS crap properly: https://atlasos.net Not a long term user of those VMs though, so I have no clue how they behaviour over a period of months (etc). - Source: Hacker News / about 2 years ago
  • Ask HN: How will I make Windows 10 collect less telemetry?
    Https://atlasos.net/ - does all that for you. - Source: Hacker News / over 2 years ago
  • Hackintosh Is Almost Dead
    > I usually have to spend an hour just removing stuff, disabling things and multiple reboots just to trim things down. All of that is automated now. https://atlasos.net. - Source: Hacker News / over 2 years ago
View more

What are some alternatives?

When comparing ReactOS and AtlasOS, you can also consider the following products

Linux Mint - Linux Mint is one of the most popular desktop Linux distributions and used by millions of people.

Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.

AME Wizard - AME Wizard is an opensource tool for modifying Windows.

Debian - Debian is a free distribution of the GNU/Linux operating system.

AltTab - Windows alt-tab on macOS

Zorin OS - A powerful operating system designed to make your computer faster, more secure and easier to use. DownloadDownload Liteย - Install Zorin OSย - Educationย - .