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 When Dalamud moves to a new level, plugins built for the previous one show (outdated) in the installer and stay off until their authors update them.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.
Display what is playing in your server bar, and play/pause/skip.
Tracks the current tick for HP/MP/GP regen
Enforces a custom resolution for the game, similar to NVIDIA DSR.
Mobile push notifications for the Party Finder.

Ever wanted to get notified when someone targets you or emotes at you? Now you can!
Modify the magitude of your minimap's markers!
Fixes SquareEnix' botched antialiasing implementation

Save/load shareable graphics setting presets at any time or auto-load them during specified conditions like where you are or what content you are doing.
Like /bgm but automatic

A helper plugin for pre-populating hunt train scout tracker links
Create vibration patterns for the controller and specify triggers to make it vibrate.

Never miss a queue pop because of the wrong job again.
Cast your vote in weekly lighthearted opinion polls! Is a hot dog a sandwich?

The realm, now with more realm in it
Mutes your game when you're AFK.
Saves and filters chats.
The ultimate guidebook for in-game duties, great for sprouts & doing your daily roulettes!
Share your quest progress with others.

Toggle controller / mouse mode automatically or with commands.
Pick titles you want in a title roulette.
Exports your current class hotbar into text. Allows imports too!
Help you record duty and who you met.
Import map coordinates to echo chat.

Easily clean out your Glamour Dresser.

Automatically finely scales the game UI by resolution.

Push notify to your device when your duty is ready
Shows an overlay and/or sends alerts when your held currency items (or non-currency items) match configurable rules. A spiritual successor to CurrencyAlert.

Automatically rename your screenshots with character and location info.
A classic arcade game.
Tobii and Eyeware Eye and Opentrack tracker support for FFXIV
For when you want to spend time fighting the boss, not fiddling with waymarks.
Keep on top of new items.
Never think too hard about your bags again!

A simple utility that allows easy export of your gearsets to xivgear.app.
Get notified when someone enters or exits your mount!

Takes a screenshot upon death (and other events).

A game to play when dead. A Puzzle Bobble clone mini-game.
Picks a random job!
Automatically copy ANY text on your screen by choice.
Ever forget who you are? We can fix that!