14 Facts About ReactOS

ReactOS has been noted as a potential open-source drop-in replacement for Windows and for its information on undocumented Windows APIs.

In 2002, the ReactOS Foundation was established in Moscow with Maxim Osowski and Aleksey Bragin as executive officers and Vladimir Bragin, Saveliy Tretiakov and Alexey Ivanov on the board of directors.

Since ReactOS is a free and open-source software development project, the claim triggered a negative reaction from the free software community; in particular, Wine barred several inactive developers from providing contributions and formal high level cooperation between the two projects remained difficult as of 2006.

Contributions from several active ReactOS developers have been accepted post-audit, and low level cooperation for bug fixes has been still occurring.

ReactOS clarified its Intellectual Property Policy Statement requirements on clean room reverse engineering to avoid potential infringement of United States law.

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ReactOS suggests that the project took source code from the Windows Research Kernel, which was licensed to universities and has been leaked multiple times.

For example, in the GSoC 2011, ReactOS mentored a student project which integrated lwIP into the network stack.

Between 2007 and 2015, Russian ReactOS contributors representing the ReactOS Foundation made efforts at lobbying the Russian federal government.

When ReactOS was awarded as Project of the Month on SourceForge on June 2013, a crowdfunding campaign on Kickstarter was announced in an interview with the project's coordinator, Aleksey Bragin.

ReactOS project organized a hackfest from 7 to 12 August 2015, in the German city of Aachen.

ReactOS makes use of the USB stack from Haiku both as a reference and as a foundation for its USB support.

ReactOS uses portions of the Wine project so that it can benefit from Wine's progress in implementing the Win32 API.

ReactOS recognized its potential to expand the total deployed base of free software, and as a resource for developers wanting to know undocumented Windows APIs in the course of writing portable applications.

PC Magazine columnist John C Dvorak remarked in 2008 that the Windows NT architecture had remained largely unchanged, making it an ideal candidate for cloning, and believed that ReactOS could be "a bigger threat than Linux to Microsoft's dominance".