Originally Posted by
ßetray
Seems like common knowledge to anyone who uses mods... but anyway.
edit: Will add links
AG_UnitFrames: Much easier setup unitframes than Pitbull, but with less options. Also very clean.
Aloft: Better Nameplate bars
BankItems: View all bags, banks, and equipped gear on any of your toons from any toon on any server.
Capping: BG Mod to help track timers on capping flags, towers, respawn on flags, who has the flag as well as a clickable flag carrier name. Everything DBM-Battleground provides + more in a lite mod.
Cartographer: The World Map mod to have. It provides detailed zone info, shows where guildies & friends are (who also have the mod), shows where you haven't explored. Can also be set to be see-through and other options.
Critline: Track your best Non-Crit/Crit damages for every ability (Damage, Heals, Pets).
DoubleWide: Make your Quest Log 2 pages, making the viewing of quests/quest info easier.
Fane: Creates simple name headers for your chat tabs rather than full buttons (looks clean, and helps keep them organized).
Fubar/TitanPanel: Mods that create tiny bars at the top/bottom of your screen that allow buttons to be placed on them as tooltips from all your other mods to be easily accessed.
GhostPulse: Cooldown Alert (Player and target) by use of a big image flash + ability name on screen.
Looter: Auto loot for certain proffessions, item value, quest items and user selected items. Great for farming, questing, etc.
pError/Roguespam: Great mods to hide ALL that red text spam on your screen (No target, not enough mana/energy/rage, thats a friendly target, etc, etc)
Postal: GREAT Mail mod to allow easy gathering of all your mail or AH-related mails.
Prat: Prat is a chat addon framework, and collection. It consists of 30+ modules which each add some functionality to the WoW chat interface. There is literally a module for just about everything chat related.
RatingBuster: One of the best on-sight gear evaluators. This mod will show you the iLvls of all gear and compare whatever gear you mouse-over/click in chat to your currently equipped slot for every stat.
Sabrina Buff Frame(SBF): The best buff replacement mod for easily mobile buff/debuf frames as well as buff filters.
Scorchio2: The only mage mod ever needed. This will track EVERY related mage debuff/buff on your target/player. It will tell show you a timer for Scorch/Winter'sChill debuff (AND NOW ALSO Shadow Bolt), Living Bomb, Hot Streak, CoE and more. Sound timers warn you of near finished buffs/debuffs as well as when they run out.
SimpleMiniMap: A much cleaner Minimap mod than SexyMap (also more liteweight).
SLDataText: View Many of your characters stats in small, clean individual mobile frames. Show/Hide any/all of them anywhere on your screen.
Turn-In: Got lots of rep items to turn in? This mod will learn what you're doing and then all you have to do is right click the target NPC and it will finish the other 3 steps for you in flash.
XLoot: Better Loot Frames
XLoot Monitor: View who looted what in a small, very customizable frame. Set length for view time per item since looting, threshold for value, and length of frame (b4 it starts scrolling [i.e. on mass emblem looting]).
XLoot Master: EASILY find who you are looking for to master loot an item to. Sorts players by CLASS w/ COLORED names. Also has the option to self-loot or random loot (for greens/blues/BoE's)