There are some Dll options and t2 options as mentioned, I was working on a Teir 1 solution written and editable in t1. haven't updated the github in a while or the help files but I'm still working on it.
I'm not a gui programmer so i can't Vouge for its design in comparison to their Ui systems.
has stuff basic stuff ud expect. text boxes button, tooltips dividers, list, list with icon, icon only list, checkboxes, virtual cameras, scrollbars, drop down menus, windows, drag and drop, resizing moving, all gadgets support padding width color,bg image,bg color, border color, border images, text. Pretty easy to reskin a ui as well in 2-3 lines of code.[size=small]
Early development on it from year or 2 ago