[ecnahc515]

While I agree with you, I think it's important to maybe specify that visual frontend builders generally suck -- for web frontends. In general, the visual UI builders for mobile apps tend to be very good.

The reason I think it's important to mention this is because I believe that the amount of variability you have to deal with in the web is far greater, which is why I believe these visual frontend builder systems tend to fall apart.

[chrisco255]

There's two layers to front end development. There is the visual layer and the arrangement of UI elements on the screen...and then there's application state management, routing, http request handling, data caching, inlining assets, etc that all come into play as well. UI builders might help you arrange elements on the screen but they do little to help with the latter except for minor cases like click through handlers.

[AstralStorm]

Visual UI builders for mobile cannot even handle reusable components directly. (Similar dialogs via mixin or inheritance, style extraction etc.)

Custom widgets? Amount of work to get them running in one of these is a nightmare.

Compare that to game engines such as Unity or UDK and their editors, it's so bad it's laughable.

[murukesh_s]

Why do you think anyone haven't built a good one yet?