Bandwidth Monitor for Mac

Is there a software to monitor the Bandwidth consumption for Mac.

I use Bandwidth Monitor Pro for Windows and its good. But I guess they do not have it Mac.

Activity Monitor does a good job of showing the current speed and the total amount of data downloaded / uploaded, but thats just good for one session.

I am looking for some software that helps me view this information over a period of time.

Thanks

Thanks dukebound85.

I was looking for something like this. I'll give it a try.