What are the different UI categories?

[Mupp]

In the action browser there are a couple of different categories for UI, what are the differences between them?

Also, after updating to latest version uGui no longer works so I had to remove it. Is that intended?

[Alex Chouls]

Do you mean the uGUI add-on? That has been replaced with the UI actions and events that are now part of PlayMaker.

GUIElement is an old Unity UI system that used GameObjects to place text and images. The new Unity UI system is a vastly improved system!

GUI and GUILayout actions use the internal OnGUI system. It's not very performant, but can be a convenient way to print some quick debug stuff to the screen. But generally you would use the new UI system instead.

[Mupp]

I see, I use several actions that are many years old, copy and pasted from other projects. Good to know, thanks.