This addon is designed to add the vBulletin 4.2 like features of seeing who is current viewing/reading and who has previously viewed/read a thread in Xenforo.
It supports Tapatalk thread views!
It supports username styling!
Username or Avatars.
Doesn't error out on redirect, invalid threads like its predecessors.
Permissions are by usergroup for each individual half (viewing versus read).
Each portion supports being positioned within the thread or being disabled.
Extensive control over what users show up.