I'm experienced wed developer doing stuff for web for a several years. But now my customer need to build crossplatform ETL tool which he want to ship to his clients. And will be much easier if it will be desktop application.
However I don't have good expertize in this field and in general don't feel great about desktop approach used in WinForms(or similar technologies) with button handlers, etc.
So in mobile application it's whole bunch of tools which allow developers write mobile app with HTML5/CSS like Apache Cordova for example.
Is there is something similar for desktop applications? If yes, does gui based on that still have similar response time as normal desktop apps?