MADCAT (Madden Career Toolkit) is a free PHP application that allows you to track the statistics of every team, player, and coach in your Madden franchise. You import .csv data and Madden's own franchise logs and it does the rest for you! It has become the de facto standard for online franchises and is used by many leagues, as well.

Free PHP tool that allows you to analyze the results of gamelogs (not franchise logs) that is useful when creating/tweaking sliders for your franchise or league.

My modification of EZFM (the tool that started it all). Reads Madden's franchise logs and gamelogs directly and displays them in a nice manner. The easiest tool out there for creating a franchise website. Not really suitable for a league.