xCT is a very lightweight combat text addon (20- 30kb mem usage)

xCT has 4 frames, first for incoming damage/resists/absorbs, second for incoming healing, third for auras/mana/reactive abilities/combopoints and other text info, frame 4 is for damage and healing you deal .
also, xCT has a nice spam merger, so damage from your AOE spell is displayed like 100500 x20 instead of 20 lines of spammy sh*t. Same for healing spells

You can place the frames as you like, and resize them.

Type /xct unlock to move frames.
Type /xct lock to lock frames on desired position.
Type /xct test to launch sample output.

The configuration section is inside config.lua file. Read description carefully. you can configure xCT per-class and per-character inside xCT.lua

config lines a pretty self-descriptive

xCT uses blizzard confuguration of combat text, so if you do not want to see auras or mana gains - disable them in blizzard setings and they'll dissapear.
Blizz CT settings a located in ESC->Interface->Combat Text

if you don't see any combat text on first use of xCT then go to ESC->Interface->Combat Text and enable things you want to see.

TODO:
Improve a bit, main functionality reached.
Dispel messages.
Interrupt messages.
Known issues
You can't choose insert mode, blizzard bug, sorry. Messages will appear from bottom of the frames and go upwards.

Credits and thanks:
ALZA - for some ideas, xCT is based on LightCT.
Shestak - for some ideas, testing and inspiring me to make this addon.
Rostok - for fixes and healing code.

bleeding edge version is Always on my github