WowAce

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

FuBar_BongosFu

Gathers statistics on certain chance-on-use spells, also known as procs.

FuBar_RaidBuffFu

NShakedown

Display an informational fighter jet style HUD while flying or riding

Adds various hearthing items to AdiBags virtual groups

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...

Adds options to create customized layouts from within grid.

Scans your Equipment for cumulative item bonuses and sums them up.

PriceTag

Proximo

FuBar_UIReloadFu

Shows the mirco menu and game menu in a clickable broker tooltip.

Mark My Words

Calculates optimal reforging for given weights/caps.

Books in Azsuna? Sure, why not?

GonffBar

Resizes some default UI frames (GuildUI, LootFrame, RaidInfo, TradeSkillUI and TrainerUI) to show more lines

mHud