ReactOS is an open-source operating system designed to be compatible with Windows, aiming to recreate the Windows experience while ensuring compatibility with existing software applications. The first stable release occurred in 2011, followed by a beta version in 2013 that improved support for 64-bit systems. By 2020, ReactOS reached a Technical Alpha milestone, indicating progress in stability and performance. The latest version resembles the outdated Windows XP interface, which may appeal to some users but lacks modern functionality. The ReactOS Application Manager allows users to install applications, but many popular software versions are outdated or incompatible. Users are advised to use the Application Manager for installations, as external downloads can lead to issues. ReactOS appeals to Windows users reluctant to switch to Linux or invest in new hardware, but it remains a work in progress with bugs and limited application support. The project invites contributions to enhance the user interface and application compatibility.