Paltalk for Mac is a Paltalk made for mac users. This Paltalk for mac version is all in one window. In this Paltalk version everything will be located in that window, rooms, messages ect.. It was a good idea for Paltalk to do this although it might be difficult to create programs for it if they ever do this in the windows version. It looks great and it seem very user friendly. They in Beta stage so expect bugs when you install it.
You can read more about the beta Paltalk for Mac version here.