WowCardioRaid is an offline standalone parser for analyzing the wow combat log output.
It's not an Addon, but a full external application.

-launch the program wow gold
-load a WowCombatlog.txt file. Logs are located in the .\logs repertory of World of warcraft. To be able to read it correctly, wow must be closed, otherwise, you will not see the last events (wow, is opening this file in exclusive mode).
-watch and analyze your log in the graphic viewport
-You can Zoom and dezoom on the timeline wow gold, select time period, select spell or event. It basically shows everything
-You can see a stats breakdown for the selected period of time, or the whole log if nothing is selected.