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 When Dalamud moves to a new level, plugins built for the previous one show (outdated) in the installer and stay off until their authors update them.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.
Reminds you about retainer ventures.
See every item you and your party pick up, as it drops.
Adds Moonbase Alpha TTS when in Cosmic Exploration. aeiou!
Out of sight, still in mind.
Display the battery level of your wireless Razer and Logitech devices
Adds QoL features to the native HUD layout editor: Undo, Redo, Copy, Paste and alignment lines.
Even the Ascians needed some tunes.
Someone in our group wouldn't eat their food. I got tired of keeping track if they had or not. Now the plugin does.
Let the heavens guide you, not the map
Look back at that cute search comment even hours later~
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?
Stop yer ears bleedin' in the Wolves' Den
Browse FFXIV roleplay venues in-game with rich filters and schedules.

Better Gearset Sorting
Find what to clean up across your dresser, bags and retainers using the 7.5 Armoire.
Counts both sides of every shared lap :3
Tracking assistant for Yo-kai Watch rewards.

Stream internet radio stations while playing FFXIV
Find cross-DC market opportunities.

Change your neighbours' housing exterior appearance.
Time your jumping puzzles!
Quiets the Gameplay Experience.

Customized mount roulette per job.

RuneLite inspired drop-tracker

Tired of missing stuff cause everything is in another timezone? Say less.
Sums up all "skill" levels like that one classic MMORPG
Marketboard analytics for FFXIV
Send game info over MQTT

If it's not 'big fat tacos', what ARE they singing?
Host your chat on a web server so you can talk from anywhere.
Shows an improved ingame (and outgame map) and collects the seen information to display later.
Add various in-game events to your Steam Game Recording timeline, comes with instructions for non-steam users!
Choose which minions show up in the minion roulette
Is this person Dew or Drew? I couldn't remember, so I made this plugin. Now I don't have to!

Now with void lighting fixed!
Preview duty loot before it drops.
Break your UI out of gaol.

For those of us too lazy to read their screens.