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 When Dalamud moves to a new level, plugins built for the previous one show (outdated) in the installer and stay off until their authors update them.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.
Modify the magitude of your minimap's markers!

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

Never miss a queue pop because of the wrong job again.

The realm, now with more realm in it
Mutes your game when you're AFK.
Saves and filters chats.
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.
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).
Picks a random job!
Automatically copy ANY text on your screen by choice.
Ever forget who you are? We can fix that!

Adds a quick special-symbol picker beside the chat mode button.
Lower 3D Resolution Scale
See every item you and your party pick up, as it drops.
Adds QoL features to the native HUD layout editor: Undo, Redo, Copy, Paste and alignment lines.

Replaces maps with a copy that has SS SB S A B ranks spawn locations, as well as Treasure map locations, including the new Br’aaxskin map.Green Cactuar: S, A, or B spawn location. Black Meteor circle: SS minion. Red Meteor circle: SS
Gives the value of current targets health in Stormtalons from the dead game Wildstar.
Create custom map markers on the map/minimap! Like <flag> but permanent.
Don't you hate CAPS LOCK so much?
Browse FFXIV roleplay venues in-game with rich filters and schedules.
Find what to clean up across your dresser, bags and retainers using the 7.5 Armoire.
Tracking assistant for Yo-kai Watch rewards.