Greasy Fork is available in English.
Adds a bunch of customization options to V3
If you don't have the V3 (Vorapis 2013) extension for YouTube installed, it won't do anything. V3 is currently in beta right now, and needs to be downloaded from the Discord server. Guess I need to make this more clear.
Don't know what it does. Don't install
are you retarded?
It adds a bunch of custom YouTube layouts from various periods of YouTube history. The earliest available layout currently is from 2011 (or 2010), and the most recent is from the current year.
Don't know what it does. Don't install