X-Perl

X-Perl is a World of Warcraft addon which enhances the game's user interface (UI) in a variety of ways. The primary enhancement of the default interface concerns "unitframes," the part of the interface that displays the status of your character, your party, and the raid. The X-Perl modification stylizes for performance, utility, and control.

With installation, new "raid frames" and "raid tools" are added; player profiles display in 3-D; tracking of players with your "heal over time spells"; flashing lights that indicate when players and pets take damage and many other notifications about the damage.

The target and the target's target are able to be seen. This helps the player know when they are holding aggro or they have lost it and need to make a move that will pull the target's attention back to them.http://wow.curse.com/downloads/wow-addons/details/xperl.aspx

There are many functions that this add on will bring to the players interface. There are in combat indicators, Raid tools that will show who is able to rezz any downed players. This will not only show who is out of combat but who has a rezz ready to use.

There is an area that will show buffs and those still needing buffing for the raid. There is a time and memory saving aspect of X-perl that keeps the computer from booting up additional memory upon start uphttp://www.fileradar.net/files/view/World-of-Warcraft_X-Perl-UnitFrames-Mod-for-WoW-Patch-3.0.2/4865