Free Windows online emulators allow users to run a Windows-like environment directly in their web browsers. This extension leverages the ReactOS platform and a Windows 10 theme over a hosted Ubuntu system. ReactOS is a free and open-source operating system that mimics Windows XP functionality, aiming to support applications from Windows XP and potentially later versions, including Windows 10. Notably, it incorporates an applications manager for easy access to compatible open-source software.

The Windows 10 theme provides a desktop experience that resembles Windows while operating within the Ubuntu framework. Although not an exact replica, it utilizes GNOME Shell extensions to enhance the desktop’s appearance and functionality. Users can manage files seamlessly via the integrated file manager provided by OnWorks, which facilitates file saving and loading within the online workstations. This setup is particularly useful for those seeking a familiar interface for their computing tasks.