I am looking for examples of good UI builders, specifically those that can handle responsive UIs while maintaining fast development velocity. Most UI builders that allows fast iteration are limited to absolute positioning, while those that are responsive are generally not very intuitive to use because the widgets cannot be easily dragged around.
Lazarus and Delphi have the most intuitive UI builders of all the tools I have every tried.
Lazarus components can be anchored relative to the parent and to each other.
Latest Delphi has various layout panels - stack, relative, grid.
Both tools feel fast and responsive (even on older hardware) which is something that I haven't experienced with any .NET or Java tool I had to use.
Both tools have been around for a long time and haven't changed or abandoned underlying technology every few years so projects built 10 years ago can still be used with latest versions, sometimes just recompiling is enough.
I wrote a UI builder for OS/2 PM that targeted PM or Windows. It also had supporting libraries and code generators that let you pick many standard formatting and validation functions as well as hook in your own. That was around 1990.
Why are we still only specifying the layout in this day and age? We should be able to spec most of an application 'in the UI builder' and only add the data processing parts, even the network access or persistence should be wired for us.
Long story but sort of XULRunner . After many days hacking the win32 event loop with assembly to inject a function to fix an event loop bug with gtk gecko.. I realized a bunch of c++ developers already solve most of the UI issues with HTML and CSS... so in about 4 months I reworked a year of work we put into Gtk+ On a custom build of Mozilla for our application... we later sold the company and I wish I still had that code but have really only worked on web apps since
