Phee Logger
This addon starts/stops the WoW combat log (pretty basic stuff - target group are lazy players like me who will not use a large addon for that).
You can choose from two conditions for starting and two for stopping the combat log.
The addon will start the log if you're in a raid group or if you're entering a raid instance.
The addon will stop the log if you're not in a raid group or if you're outside a raid instance.