Presenting: Bars
Displays bars for player HP/MP/TP/Pet, Target, and Focus Target, as well as Actions for Targets, Focus Targets, and Player (Self). Can display anywhere from all bars at once, to all the way down to just the target bar.
Download from Github here

↑All bars visible at the same time. The Screen Test pops up when using any command that adjusts the look of the Bars.

↑Ramuh laying the smack down on a fearsome Sylvestre. HP, MP, and TP bars are disabled.

↑The Target and Self Action bars visible and in action showing how many targets were hit and the total of all damage done.

↑The Target, Self Action, and TP bars visible in action showing WS and SC damage done (old v2.0 look, in 3.0 the targets name is also colorized).

↑Bumba with Yaegasumi active before it wears off.
Features
Player Stats (HP/MP/TP/Pet) can be turned on/off individually per job (ie SAM could show only TP, while PLD shows HP, MP, and TP).
○ Bars automatically align to the top, but vertical offset can be adjusted per job if you prefer them aligned to the bottom.
Target bars colored based on type (NPC, Party member, mob claimed by someone else, etc.).
Target Actions.
○ Displays results of completed actions (damage, buffs, resists, etc.).
○ NEW IN 3.0 Displays number of targets hit and totals for AoE cures/damage.
○ Displays casting, completed, and interrupted icons.
○ Tracks every player/mob around as they perform actions, so you can tab around and target and see what they are doing.
○ Spells are colored based on their element.
○ The target of the action is colored based on type (NPC, Party member, etc.).
Self Actions.
○ Dedicated to displaying your own actions.
○ Displays a casting bar based on casting time for spells and items.
Focus Target.
○ Add/remove targets to a list to automatically display a focus target for.
○ Can track by name or ID.
○ Displays the Focus Targets actions as well.
○ Automatically hides the Focus Target when it is targeted.
Focus Target Override.
○ Designate the current target as a Focus Target taking priority over the Auto Focus Target list.
○ Focus will persist until subject moves out of range, dies, or is disabled manually.
Display the Index or Hex number for targets.
○ Useful for NM placeholder camping, or designating a specific mob for others to target.
Display distance to target.
NEW IN 3.2 Highlights a targets name when they use an SP Ability and displays which ability for the duration of it.
○ NOTE: Timing for players who have gear adding additional time cannot be accounted for.
NEW IN 3.0 Display Dynamis-Divergence mob jobs.
Markers on the TP bar for 1k/2k, and on the HP bar for yellow HP.
NEW IN 3.0 Fades away after a set time of inactivity.
Features can be turned on/off or adjusted via settings file or in-game commands.
See github readme for full list of in-game commands and settings file options.
I originally built Bars to address some shortcomings of another bar that showed enemies, then ended up fleshing it out with other things I thought would be cool to have. I really enjoyed working on this one and am super happy with how it turned out. I made sure there are lots of adjustability options if you want to change how it works. You can turn off almost everything about it to make it a very simple target bar, but I think you'll like some of the extras packed in :)