This is a very different software than most as it allows you to create an executable applet using simple GUI tools. It is actually quite easy to use as many of the tools are simple drag and drop stuff. It integrates well with all three major OS of Mac, Linux and Windows and actually allows to create for even older versions of the OS. The help section is marvellous actually as it is like coding documentation, so good customer support. A single button compiles and runs the file making it super easy to implement.

Speed of web development. Handle the UI and the logic one language.

Nothing as of lately. The framework has grown clunky and with the advent of API 2.0, Xojo is a nightmare to use. They keep changing syntax and code to the point you must re-learn the language with each new release. After 20 years, we're leaving Xojo in the dust...