What is this addon?

Recently I came across a chat that interested me(I Found it in a random video), can you accidentally tell from the screenshot what kind of addon it is?
https://imgur.com/RkLCVFA

when it comes to this chat with the note OOC, or below / me it is from the Darkrp addon mode to DarkRP MODIFICATION MASTER or something like that

Didnt see something like that maybe a modification like you know the darkrp modification maybe they did something in there maybe