ClickableNametags

This mod lets you  select other players by clicking on their nametags.
You can find two downloads on the files/earlier versions tab:

Left click: Allows you to left-click player nametags.
Both: Allows you to left and right click nametags. Right-click opens interaction menu.

Currently doesn't support clicking on NPC's or pets...should it?

Install: unzip to SWL\Data\Gui\Custom\Flash
Uninstall: delete  SWL\Data\Gui\Custom\Flash\ClickableNametags