Completed quest addon?
 

Is there an add on that can see what quests you have completed?

Thanks


Bellator

No there isn't.

There is currently no way for addons to detect quests which have been completed prior to it's installation.

EDIT: The best alternative currently available is to install EveryQuest and roll a new character.

EveryQuest does have an option to mark quests as done if you know you've done them. Can be hard to remember for sure if some low level quests have been done on a higher level character tho. In that case you would have to almost go back to the questgiver to see if it shows up. If it isn't part of an incomplete chain and you haven't done it, it would show up as a low level quest. Once installed tho it will track the quests as you complete them. It also can show you other quests for a zone. I found a few I didn't even know about and with the help of Lightheaded (which it is designed to work with) found out where to get the quests if I wanted to do them.