As a result, the project members, led by then coordinator Jason Filby, joined together to revive the project. While FreeWin95 had started out with high expectations, there still had not been any builds released to the public by the end of 1997. The project stalled in discussions of the design of the system. History Early development Īround 1996, a group of free and open-source software developers started a project called FreeWin95 to implement a clone of Windows 95. ReactOS, as part of the FOSS ecosystem, re-uses and collaborates with many other FOSS projects, most notably the Wine project, which presents a Windows compatibility layer for Unix-like operating systems. The project partially implements Windows API functionality and has been ported to the AMD64 processor architecture. ReactOS is primarily written in C, with some elements, such as ReactOS File Explorer, written in C++. However, many Windows applications are currently working, such as Adobe Reader 9.3, GIMP 2.6, and LibreOffice 5.4. As of February 2022, it is still considered feature-incomplete alpha software, and is therefore recommended by the developers only for evaluation and testing purposes. ReactOS has been in development since 1996. ReactOS has been noted as a potential open-source drop-in replacement for Windows and for its information on undocumented Windows APIs.

ReactOS is a free and open-source operating system for amd64/ i686 personal computers intended to be binary-compatible with computer programs and device drivers made for Windows Server 2003 and later versions of Windows.

ReactOS 0.4.14 running the Firefox Web browser

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