Here are 5 AddOns for you to check out that may serve your purpose(s).Gnosis is a highly configurable castbar and single timer addon. Gnosis can show ticks of channeled spells, detect unintentional clipping while channeling and combine data of channeled spells to combat text addons (MSBT, SCT, Parrot). It also allows to create buff, debuff, and cooldown (spell, rune, item) timers with a similar set of options castbars have.Ellipsis: http://www.curse.com/addons/wow/ellipsis
Ellipsis is an addon that features multi-target DoT and HoT tracking for spells that you cast on other people. It has support for all classes and can additionally be configured to track Cooldowns as well. Access the GUI by typing '/ellipsis' or by going to the WoW Main Menu, then Interface, then the Addons tab and selected Ellipsis from the AddOn list on the left; contained here are a rather large number of options to configure pretty much all aspects of the display (and a few functionality based options as well).CT_BuffMod: http://ctmod.net/download/6
CT_BuffMod allows a much different style of customizable buff display. Buff names and durations can be shown. Buffs can be sorted by type or duration. BuffMod is very versatile and the only way to truly find the settings you like is to play with the options. By unlocking the buff frame via the control panel, you can move the buffs to your selected location. Click and drag anywhere on the window to move it, or use the lower right corner to resize it.Elkano's BuffBars: http://www.curse.com/addons/wow/elkbuffbars
EBB provides groups of statusbar style indicators to show (de)buffs currently affecting your char or some other units (currently focus, pet and target). For the player, it can also show indicators for temporary enchants place on it's weapons.NeedToKnow: http://www.curse.com/addons/wow/need-to-know
NeedToKnow lets you monitor specific buffs, debuffs, cooldowns, and totems as timer bars that always appear in a consistent place on your screen. NeedToKnow is especially useful for monitoring frequently used buffs, debuffs, and cooldowns. For example, a rogue could configure NeedToKnow to show timer bars for Slice and Dice, Rupture, and their own stack of Deadly Poison VII. A death knight could use it to track their own diseases on a mob.
Edited by Chenzi on 11/6/2012 10:11 AM PST