Where can I find statistics about Facebook applications?

I'开发者_C百科m trying to find a source for Facebook Application statistics. I'm most interested in getting a comprehensive list of the applications in the system, and how many monthly active users each app has. I know this information is available on each application's page, but aside from crawling Facebook, is this information available somewhere, or via Facebook's API?

Facebook Applications Leaderboard http://statistics.allfacebook.com/applications/leaderboard/

Check facebook insights

https://developers.facebook.com/apps/{urAppIdHere}/insights