Addons and macros

Macros and addons
Main article: Useful macros for warlocks
Necrosis LdC is based on Necrosis 1 by infernal. It is described by its author as "a mod to help warlocks managing their stones, shards and summoning of demons". It provides sound notifications for various events, for example when Nightfall or Backlash combat states occur. It also has the ability to send party/raid notifications when casting SoulStone, Ritual of Souls, Ritual of Summoning — and many other messages, which can all be customized. As such, this is a very useful addon and perhaps the most widely used of all the warlock specific addons.
DoTimer is an addon that times DoTs that you cast on other people. It supports all classes. There are four functions performed by DoTimer: the base DoT timer, a cooldown timer, a communications addon that lets you communicate your timers to others in your party, and a customizable notifications addon that can be set to notify you or others of specific events.
Natur EnemyCastBar shows all buffs and debuffs on your character making it exceptional for raiding.
ForteXorcist (also here) shows spell timers, cooldown timers and messages that you can set for yourself or the raid. On top of that, it also offers support for tracking Soulstones, shards and healthstones as well as a summoning assistant. Also, although the addon is primarily targeted at Warlocks, ForteXorcist can also be used with the other classes. In essence, ForteXorcist provides what Necrosis and DoTimer does with a few added extras.