Plugins and mods
Dalamud plugins add features to Final Fantasy XIV while it runs. You install them from the Plugin Installer, which the /xlplugins chat command opens once the game is started through XIVLauncher.
Each plugin is built for one Dalamud API level. When Dalamud moves to a new level, plugins built for the previous one show (outdated) in the installer and stay off until their authors update them.
Mods from Nexus Mods replace the game’s models, textures and sounds on your own client and are loaded with Penumbra or TexTools.
Do you want an announcer in your PvP matches, PvE duties, and fates? Metem and the Scions have offered their services!

A more intelligent targeting system for the game.
Enhance and customize job gauges.
Actively logs healing, cleanses, buffs, and more. Finally figure out who rescued you.
Customizable UI elements to track cooldowns, status and more.
Turn your Elgato Stream Deck into a hotbar!
Visually tracks MP regeneration ticks (Black Mage only).
Create, save, and practice your openers.
Make hotbar skills that you cant use transparent when sync'd
Shows what mount another player is using. Includes a mount database, chat links, and trial totem tracking.
Keep tabs on how much more PVP you have to play before unlocking your next Series Malmstone reward!
Customize the Cross Hotbar!
Play OOF! on fall and/or death. The Only Plugin You Need!
Tilt the camera, not yourself.
Keep your mouse cursor contained during combat!
Total control of your User Interface

Adds the message NICE to your damage flyout when you get a hit ending in 69.
Track some duty info.
Save and load hotbars into profiles, re-use them later, profit.
Always five* keystrokes away from any job
Customizable target lines
Infinite Blue Mage spell loadouts.

Before StatusTimers, my buffs/debuffs were a mystery. Now, it's a well-organized history!

A realtime multi-user whiteboard raid planner and strat viewer. Compatible with https://aetherdraw.me
Records a crafting rotation and export it as a macro.
Customize the layout of the party list.
Draw the compass directionals around the target for easier callouts
Display estimated stats with Examine, and export gear to Etro/Ariyala.

Suggests bait for ocean fishing.
View the remaining XP on Crafter's/Gatherer's Grace
A visual replay of positions before death. DeathRecap + AetherDraw

No longer will you be an Archmage Monk, set a different title per job!

Never miss a queue pop because of the wrong job again.
Helps show what actions are missing from your hotbars.
The ultimate guidebook for in-game duties, great for sprouts & doing your daily roulettes!
Exports your current class hotbar into text. Allows imports too!
Save and load actions into hotbars without taking up extra job hotbars.
Easily get general and role-specific hints in duties.
For when you want to spend time fighting the boss, not fiddling with waymarks.
Total control over where to put your hotbar slots.