One of our sister sites, MLB Daily Dish, has made a pretty handy reference guide for Red Sox fans. It's a complete organizational chart of the franchise, detailing not just the major league roster, but also the front office, and the entirety of the minor league system.
And really, it's not just that, either. The last three years of Baseball America top 10 prospect rankings are included. The year players become free agents, whether major or minor league. Arbitration status, salary, a color-coded key for player, mutual, vesting, or team options. The coaching staff and their positions. Whether a player is out of options, is a spring training non-roster invitee, their age... if it doesn't have everything, it sure is close.
It's not completely filled out yet -- not a surprise given the amount of information involved -- but it's already loaded up with tons of information. The goal here is to get this all in one place for easy reference, so next time you've got a question about contract status, salary, or any of the above, this is where you'll want to be looking.
[Update] MLB Daily Dish is aware of the mistakes in the organizational chart, and are working to fix them.