I only recently started my first villager "farm" and quickly got tired of having to click every one to find the trade I wanted.  So, I made this little mod that shows a small HUD over any villager you are looking at showing each offer they have available.  It even works on baby villagers :)

An added feature is naming your villagers!  Just press the "N" key while looking at any villager and you will be able to name them anything you want.  This is a nice way to keep track of your favorite traders as their nametags are always visible even at a distance.

Unfortunately, in order for this mod to work in multiplayer, it must also be installed on the server.  Perhaps someone with more Forge experience than me could tell me a way around that.

****HUD IS DISABLED BY DEFAULT.  PRESS "V" TO TOGGLE***