Which is the best way to create an cross platform robust sytems which includes desktop, web and mobile application?

Question

Please do respond according to you best of knowledge till date. Feel free to answer

Answer 1

You can create apps you want with Xamarin tools. This one is working on the base of C# language.

Also Visual Studio supports Xamarin for creating apps not only for Windows, but also for Android, iOS, as well as MacOS.

xamarin.com

Answer 2

https://www.sololearn.com/discuss/1068494/?ref=app