EllesmereUI – A fully customizable addon for your entire UI setup, compatible with both Retail and Forever. Made by Ellesmere_Gaming and found here: https://www.curseforge.com/wow/addons/ellesmereui

DialogueUI – Customizable UI addon for quests, with automation and immersion.
Found here: https://www.curseforge.com/wow/addons/dialogueui

DungeonJournal – A must have addon for exploring the dungeons! It includes all quests for both factions and zone map so you will never get lost (probably!).
Found here: https://www.curseforge.com/wow/addons/dungeonjournal

What’s Training? – An addon that shows you what you can train and what it costs. It’s a separate button that you press in your Spellbook to access.
Found here: https://www.curseforge.com/wow/addons/whats-training

Quest Completist – An addon that tracks the completed (or not!) quests and displays them on your map. Separate from a quest-tracker addon (like questie), as WoW Forever has its own quest tracking!
Found here: https://www.curseforge.com/wow/addons/quest-completist

Auctionator – An Auction House addon that overhauls the Blizzard base Auction House, however the best use of it (imo) is when you scan the Auction House, it shows you the Auction price when you mouseover an item!
Found here: https://www.curseforge.com/wow/addons/auctionator

BagSync – An addon that syncs all the items you have from each of your characters in one simple mouseover. Compatible with Auctionator.
Found here: https://www.curseforge.com/wow/addons/bagsync

Disenchant Buddy – An addon that shows the value of items from disenchanting. Compatible with Auctionator to show the most accurate prices. Never vendor an item (if you can disenchant it!) again!
Found here: https://www.curseforge.com/wow/addons/disenchantbuddy

GatherMate2 – An addon that shows you the nodes (herbalism, mining, treasures, fishing pools) that you have already farmed! You can enable/disable different tracking and settings in the addon, when to show and when not to.
Found here: https://www.curseforge.com/wow/addons/gathermate2

Better Fishing – An addon that helps with fishing by displaying an icon above the bobber. You can use a single keybind to Fish and Hook as well.
Found here: https://www.curseforge.com/wow/addons/better-fishing

Angler’s Atlas – An addon that compiles and shows you where certain fish can be fished. It can also be used instead or complementary to Better Fishing addon.
Found here: https://www.curseforge.com/wow/addons/anglers-atlas-forever