Has anyone made a tabbed UI yet?

Re-sizing all the windows all the time is getting annoying has anyone created something like this for download?

I don’t think anyone has made this. Essentially it is the same as the screen layouts dropdown found in the info header. You can also use ctrl-lmb or ctrl-rmb to switch between layouts in addition to adding your own. The hotkey is just as fast with the downside you have to remember the order of your layouts to use it well.

Not sure if it is what you want but you can focus on a window by mousing over it and pressing “shift+Space”.