> Matter is if your application can run at web

FoxInCloud does that, Chen's VFPA64 protects from Windows no longer supporting 32-bits

> -royalty free-

If developers never want to pay, neither for a license, nor support, nor deployment ('royalty'), how can the development of software be funded?
User or server-based license is win-win: unless you give away your software (and your working hours) for free, the more servers or users you deploy to, the more $ you get, the more you can share with the software editor.