Yes, KDE Connect is a free and open-source application that is available for download on the official KDE website or FileHorse. KDE Connect is 100% FREE and is available for all modern versions of Windows OS. The app is also ported to many other desktop and mobile platforms, including Linux, macOS, iOS, Android, Plasma Mobile, and Sailfish OS.
KDE Connext is awesome, better than that "My Phone" app Microsoft creates, and it has a Windows version, but it does not work very well like in Linux, the alternative I recommend to you is an app called Unified Remote, it also has Linux version, but work better with Windows one, I am testing it but it has some problems, very limited in the free version and some plugin are not working properly