Cataclysm runs on client version 4.3.4, and it is the version almost every Cataclysm private server is built on. This page lists WoW Cataclysm addons made for that client, covering the reshaped zones, Dragon Soul, and the reforging system Blizzard added in this expansion.

Why Cataclysm needs addons

Cataclysm reworked the old world and added mechanics the base UI never fully caught up with, such as reforging stats on gear and transmogrification. There is still no built-in damage meter, and comparing reforge options across a full set of gear by hand is slow. Addons cover these gaps without changing how the expansion plays.

Some private servers running 4.3.4 add their own systems on top of the client, such as custom Mythic Plus modes. A few addons, like Proudmoore’s own Mythic Plus UI, are built for one specific server rather than for 4.3.4 in general. Check which server an addon targets before installing it.

Addon categories on this page

The addons here are grouped by function, so you can filter by what you need instead of scrolling through the full list:

• Boss encounter addons with timers and cast alerts
• Damage and healing meters
• Bag and inventory organizers
• Auction house tools for pricing and scanning
• Gear and reforging calculators
• Unit frame and nameplate replacements
• Full UI replacements and action bar mods

Use the filters at the top of this page to narrow the list by category, server, or update date.

Popular addons for Cataclysm 4.3.4

Deadly Boss Mods gives you boss encounter timers, alerts, and warnings for raid mechanics from Blackwing Descent through Dragon Soul.

Details! Damage Meter tracks damage, healing, and threat during fights and breaks the numbers down by ability, so raid leaders can see who needs to adjust their rotation.

ReforgeLite calculates the most efficient way to reforge your gear toward the stats your spec needs, instead of working it out manually at the reforger.

AtlasLoot Enhanced lists the loot tables for Cataclysm dungeons and raids, including item stats and drop sources.

Bagnon combines your bags and bank into a single window and adds search and sorting.

Auctionator speeds up buying and selling at the auction house with saved searches and price history.

ElvUI replaces the default interface with a single, configurable UI covering unit frames, action bars, and chat. Warperia also has a library of ready-made ElvUI profiles if you would rather import a finished setup than build one from scratch.

How to install Cataclysm addons

1. Download the addon as a .zip file from its page on Warperia.
2. Extract it with 7-Zip, WinRAR, or the extractor built into Windows.
3. Open your WoW installation folder, then Interface, then AddOns.
4. Move the extracted folder into AddOns. The folder containing the .toc file needs to sit directly inside AddOns, not nested inside another folder.
5. Start the game and click the AddOns button on the character selection screen to confirm the addon is enabled.

Some private servers block addons last updated for a different client version. If an addon does not appear after installing it, tick “Load out of date AddOns” on the same screen.

Installing addons with the Warperia app

The Warperia desktop app installs addons directly into your AddOns folder and checks for updates automatically, so you do not need to download zip files or extract them by hand. It supports Cataclysm 4.3.4 along with the other expansions listed on this site.

Keeping addons up to date

Cataclysm addons still get updated by their authors, either to fix bugs or to add support for server-side patches. An outdated addon is one of the most common causes of Lua errors on login, so if something breaks after a server update, check this page or the app for a newer version before assuming the addon is broken for good.

Frequently asked questions

Do Cataclysm addons work on every private server?

Most do, since they are built against the 4.3.4 client itself rather than a specific server. A few addons are made for one server’s custom content, such as Proudmoore’s Mythic Plus UI. These are labeled on their addon page.

Can I use WotLK or MoP addons on Cataclysm?

No. Addons built for a different expansion use a different API version and will not load on 4.3.4. Look for addons that list 4.3.4 or Cataclysm as their supported client, which is the case for everything on this page.

Why do I get a Lua error after logging in?

This usually means an addon is out of date for the current client or server patch, or that two addons are conflicting with each other. Disable your addons one at a time to find which one is causing the error, then check for an updated version.