XF 1.3 What Add-on is this?

[XeStorm]

I want to know what add-on this is because I have seen it in a lot of forums and it looks very useful.

http://gyazo.com/436ef40146a788acdd4cb7124387e31b

It's a message bar. But I don't know the name nor where to download it.

 

[Paul B]

It's the built in Notices system.

http://xenforo.com/help/notices/