[laughing_man]

>You can do the core functionality of your product as cross platform, to some extend, but once you hit the interaction with the OS and especially the UI libraries of the OS, I think you'd get better software if you just accept that you'll need to write multiple application.

Or you can use a VM, which is essentially what a modern browser is anyway. I wrote and maintained a Java app for many years with seamless cross platform development. The browser is the right architecture. It's the implementation that's painful, mostly for historical reasons.

[addaon]

But using a browser (or a VM) buys into the fallacy that your customers across different platforms (Windows, Mac, etc) want the same product. They’re already distinguished by choosing a different platform! They have different aesthetics, different usability expectations, different priorities around accessibility and discover ability. You can produce an application (or web app) that is mediocre for all of them, but to provide a good product requires taking advantage of these distinctions — a good application will be different for different platforms, whether or not the toolkit is different.