LoggerPro logs everything, but it also does much more. Have you ever wanted to know how much time you play in a given month or day? LoggerPro can tell you that. In addition to time, LoggerPro also shows you the following:
Epic/Legendary items acquired (if you're in a guild; it uses a hacky workaround to get them)
Levels gained per character
Achievements per character
Zones entered and left
Logins and logouts
DBM boss kills (If DBM is installed)
This addon shows all of that in an easy to use interface. All logging options are completely customizable; if you don't want to log any certain event you can turn it off.
r1-3-2: Fixed bug with monk class, also fixed null error.
r1-3-1: When you complete a dungeon or LFR raid with members of your guild, people from your friends list, or RealID friends it will show that in your log. (i.e names of the members who came along and your relationship to them)
r1-3-0: Updated for 5.0.4.
r1-2-9: Never ever say that all bugs are squashed.
r1-2-8: Bug squashing spree. Now, as far as I can tell, the addon is completely bug-free. I also added an icon to the levels part of the summary page which shows a class that you leveled for that particular day.
r1-2-7: Minor bugfixes and rewrites that make the addon a little less spotty. Yes, I know I skipped 1.2.6, it was an internal beta
r1-2-5: Fixed the level summary failure. Added LFG dungeon logging and icons to PvP battlegrounds.
r1-2-4: Fixed the creation of multiple dates.
r1-2-3: Fixed stack overflow.
8/12/12: Fixed stability of Summary panel. Added battleground logging. Addon is stable. Fixed folder issue.
8/6/12: Addon actually works now. Glad to see I could fit this in for the second update! Also, there's a summary frame now. I removed the tooltips present in the screenshots as they were clunky. The summary frame works much better.
7/22/12: First revision update. Fixed disabled options buttons when DBM isn't installed.