Gladdy - Classic

Gladdy is a powerful arena addon with various modules which can be enabled/disabled and configured in behaviour/appearance.

Modules:

Announcement (drink, trinket usage, spec detection ...)
ArenaCountDown
Auras (show important (de)buffs as well as interrupts on the class icon)
BuffsDebuffs (show buffs and debuffs on arena frames - can be filtered)
CastBar (shows a castbar, can be disabled)
ClassIcon (or specicon, once detected)
Clicks (bind spells or macros to click actions)
CombatIndicator (shows a sword icon if unit is in combat)
Cooldown (tracks important cooldowns)
Diminishing (tracks DRs)
ExportImport (share your profile with your friends in the form of a string, which can be imported)
Highlight (highlights focus and target)
Pets (show arena pets)
Racial (show arena racial cooldowns)
Range Check (checks the range to a unit by a configurable spell)
Shadowsight Timer (shows a little movable frame with time left until Shadow Eyes spawn)
Targets (show arena1-5 targets)
TotemPlates (show totem icons instead of normal nameplates, compatible with Plater, NeatPlates, KUI, ThreatPlates, ElvUI, TukUI)
TotemPulse shows totempulses on nameplates
Trinket (tracks trinket usage)
VersionCheck (checks if you use an older version that your teammate)
XiconProfiles (predefined profiles to start your configuration from)

PS: You might know me by Knall or XiconQoo. My GitHub is https://github.com/XiconQoo.

miraage - the origininal author of Gladdy! Your work set the foundation for this edit. Thanks!
Schaka - the maintainer of Gladdy! (thanks for letting me continue Gladdy and all the work you put into the TBC community)
Macumba (thanks for all the support, your feedback and your dedication for the TBC community)
RMO (without you I would not have modified Gladdy at all and thanks for all the suggestions and active feedback)
Ur0b0r0s aka DrainTheLock (thanks for testing, giving feedback and correcting/adding wrong CDs)
Klimp (thanks for all the suggestions and active feedback)
the whole TBC addons 2.4.3 discord (thanks for the support and great community, especially the MVPs)
Hydra (thanks for constructive feedback and suggestions)