FredChat

Lightweight addon to show your FPS and Ping! Move it anywhere, change its colors and size.

A modular collection of practical tools for chat, trade, combat, Mythic+, and interface enhancements.

GroupFinder enhances group finding and Mythic+ management in WoW Retail with advanced filters, recruitment tools, specialization displays, Warband tracking, keystone information, and Great Vault progress.

Thank every player who buffs you with a whisper or emote, and keep your raid, yourself, and your weapons buffed with a click-to-cast buff reminder. Plus alerts for feasts, portals, summons, soulwells, and class cooldowns. Manners, automated.

End-of-run awards screen for dungeons, raids and battlegrounds with 3D character models, emotes and group-synced results.

Mythic+ companion: broadcast your key to friends, see what they're running, and get told exactly when to Bloodlust — from top-log data or your own MDT route.

SaltyDog provides the most sophisticated fishing and loot tracking tools & options on the market and let's you die like a movie star!

Fade your whole interface automatically, and control every piece of it separately.

A modular UI toolbox with fast focus, addon profiles, interface improvements and group utilities. Features vary by WoW client; optional RSS adds preset installation and layout tools.

MeetingStone's happy version (from curseforge)

Adds icons to your items to show their collection status

One click to buff back whoever just buffed you, and nearby players missing yours.

Put better macros on your action bars.