User Leaderboard Addon?

I'm trying to find a user leaderboard, (most posts, most likes etc), but cannot seem to find one. The old vbulletin system I used had an awesome leaderboard and it worked very well for getting forum users more active. Can anyone point me to a free or paid addon for this?
 
As @leebo said, the clicking the "Members" tab in your header menu should do the trick. If you're looking for something like a widget that you can place in other places on your site, I would recommend taking a look at this addon by DragonByte. If you want an example of it in action you can look at the widget that's at the bottom of my site (the link is in my signature) to see what it looks like. It's also customizable so you can add/remove/rename the different options in the widget.
 
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