Depends on what you can define "Tracking" as.

1) Player rankings
2) Hand History
3) Poker tracking of games

All of the above can be done through a poker tracking client. I have used PokerTracker to help me get better results of my play.

PokerTracker.com

I recently joined MoreEv to get the Hold'Em Manager. Here is the link to check out Hold'Em Manager.

MoreEv.com

Both of which have great tracking ability that Tracks in RealTime while you play. Hope this helped