ReactOS is a free and open-source operating system designed to run Windows applications and drivers. Built from scratch, it offers a familiar interface for Windows users while maintaining compatibility with a variety of Windows software. This operating system allows users to create custom versions, enhancing its flexibility for different needs. ReactOS is driven by community contributions, making it a collaborative project that encourages user participation in translation, coding, and donation.

Targeting a wide audience, including small businesses, nonprofits, and freelancers, ReactOS supports English and offers 24/7 live support and online resources. The system integrates with tools like Jira and provides API access, making it suitable for various organizational types. With documentation and video training available, users can easily familiarize themselves with the operating system's features.