Here is a simple list of all my AddOns that I use daily for World of Warcraft: The War Within.

Name Description
Advanced Interface Options Restores access to removed interface options in Legion.
WeakAuras A powerful, comprehensive untility for displaying graphics and information based on buffs, debuffs, and other triggers.
BigWigs Modular, lightweight, non-intrusive approach to boss encouter warnings.
LittleWigs Boss warnings for 5-man dungeons & scenarios.
Details! Damage Meter Computes details infos about combats.
GladiusEx Arena enemy unit frames.
idTip Adds IDs to the in-game tooltips.
Premade Groups Filter Allows filtering of premade groups using an UI or advanced filter expressions.
Raider.IO Mythic Plus and Raiding Shows Raider.IO Mythic+ Score and Raid Progress in-game.
Simulationcraft Constructs SimC export strings.
Plater Powerful nameplates AddOn.
Zygor Guides Viewer Zygor Guides are high quality in-game strategy guides for World of Warcraft that will walk you step by step through every aspect of the game.
OmniCD New lightweight addon to track party cooldowns.
Leatrix Plus Leatrix Plus is an efficient and modular addon which offers lots of quality of life improvements to enhance the default user interface in The War Within.
LargerMacroIconSelection Shows you a much bigger icon selection frame.
BugSac BugSack eases the process of viewing bugs.
BugGrabber BugGrabber is a small addon that simply grabs all Lua errors generated by WoW.
BigDebuffs BigDebuffs is an extremely lightweight addon that hooks the Blizzard raid frames to increase the debuff size of crowd control effects.
Better Wardrobe and Transmog Better transmog panel and allow for randomize transmog.
Auctionator Auctionator is designed for casual everyday auction house users.
Baganator Baganator is a comprehensive and straightforward single or categories view bag and inventory addon for World of Warcraft.