nSpellTracker

-- Player spells will have a blue border
highlightPlayerSpells = true

-- How fast should the timer update itself
updatetime = 0.1

Example

To add a debuff, buff or cooldown to track just open the class specific config file under the classes folder and add one of the following: addon:Debuff(...) addon:Buff(...) addon:Cooldown(...), where ... is a table containing various settings. Here's an example for tracking Corruption:

addon:Debuff({
    spellID = 172,
    size = 36,
    position = {'CENTER', 'UIParent', 'CENTER', 150, 0},
    unit = 'target',
    validateUnit = true,
    hideOutOfCombat = true,
    isMine = true,
    desaturate = true,
    movable = false,
})

To track multiple spells you just add a table of spell ids like so:

addon:Buff({
    spellID = {172, 234, 2356},
})

The same goes with the spec option:

addon:Buff({
    spec = {1, 3},
})

There's also a helper buff/debuff table so that you can easily target buff/debuff groups like Mortal Wounds or Spell Power buffs. Just assign spellID any of the following values:

-- Buffs
addon.buffs.stats
addon.buffs.stamina
addon.buffs.attackPower
addon.buffs.spellPower
addon.buffs.haste
addon.buffs.spellHaste
addon.buffs.criticalStrike
addon.buffs.master

-- Debuffs
addon.debuffs.weakenedArmor
addon.debuffs.physicalVulnerability
addon.debuffs.magicVulnerability
addon.debuffs.weakenedBlows
addon.debuffs.slowCasting
addon.debuffs.mortalWounds

Settings

{
    -- The talent tree you want to track the spell (nil will make it work in
    -- any tree).
    spec = nil,

    -- Attribute that lets you show/hide the frame on a given state condition.
    -- example: '[stance:2] show; hide'
    visibilityState = '[petbattle] hide; show',

    -- The spellid to track this will represent the icon if none is found.
    spellID = 469,

    -- The size of the icon.
    size = 26,

    -- The position of the icon (http://www.wowwiki.com/API_Region_SetPoint).
    position = {'CENTER', 'UIParent', 'CENTER', 150, 0},

    --Unit ID (http://www.wowwiki.com/UnitId), the unit that should be tracked.
    unit = 'player',

    -- Only show the icon if unit is found.
    validateUnit = true,

    -- Hide icon out of combat.
    hideOutOfCombat = true,

    -- Hide if the buff/debuff isn't mine.
    isMine = false,

    -- Desaturate the icon if not found.
    desaturate = true,

    -- Match only spell IDs (instead of spell names extracted for a spell ID)
    matchSpellID = false,

    -- In case you want to move the frame in-game, the size will be the MINIMUM
    -- frame size you can resize to, so adjust the size in case you need lower
    -- minimum size ingame.
    movable = true,

    -- Set the alpha values of your icons (transparency).

    -- Debuffs and Buffs
    alpha = {
        found = {
            frame = 1,
            icon = 1,
        },
        notFound = {
            frame = 0.4,
            icon = 0.6,
        },
    },

    -- Cooldowns
    alpha = {
        cooldown = {
            frame = 1,
            icon = 0.6,
        },
        notCooldown = {
            frame = 1,
            icon = 1,
        },
    }
}