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ReactOS 0.4.2

A free and Open Source operating system for your computer

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Average rating: 5/5 (1 votes)
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ReactOS screenshotReactOS is a completely free operating system for your computer which was built upon the finest principles contained by the Windows NT architecture. ReactOS was developed from scratch and doesn't share any of the characteristics found in the UNIX architecture.

The main purpose of ReactOS is to offer an operating system which can be supported by Windows OS. This feature will allow all your Windows drivers and applications to run on ReactOS as they would on your MS Windows system. Moreover, the software uses the look and feel of Windows, allowing you to easily get accustomed to the system's graphical interface. This also eases the use of ReactOS and enables you to use it as an alternative to MS Windows without being needed to give up to the programs you are already used to.


  • The software uses the familiar look and feel of Microsoft Windows.
  • It's binary compatible with MS Windows, allowing you to run Windows apps and drivers.


  • It has a few bugs and it's unstable.
  • Has some when problems running on SATA drives.
Name ReactOS
Version 0.4.2
Developer | see all products from this developer
Product Homepage ReactOS
License Free (Freeware)
Last Week Downloads 0
All Time Downloads 3,428
Filesize 96.4MB
MD5 Checksum 3112079010B45CF0B0C41B4572E6F8B5
OS Support Windows All
Category Desktop Enhancements

100% CLEAN Certification

BadgeReactOS has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
ReactOS 0.4.2 August 18, 2016 - Latest Version
ReactOS 0.4.1 May 19, 2016
ReactOS 0.4.0 February 18, 2016
ReactOS 0.3.17 November 07, 2014
ReactOS 0.3.16 February 10, 2014

Download the free ReactOS