Need help with finding a UI/addons from a video

Hey guys, so I was looking for a good UI that would run nicely and look nicely on my Lock in 3.3.5 and I stumbled upon this: https://www.youtube.com/watch?v=0spY4WC2evQ

I really like it, but there is no link in the description or the comments. Does anyone happen to have a name of this UI or at least know which addons this guy used and for what? Thank you very much :)