MLBTR maintains a constantly-updated, information-packed free agent list. The list can always be found on the sidebar under 2011 MLB Free Agent List, or you can just bookmark this link:
Our free agent list contains everything you need for your hot stove discussions. Players are grouped by position. The player's 2011 age is included. Contract options are noted. Scott Boras clients are bolded. New free agents are added right away, and signed players are removed. And exclusively on MLB Trade Rumors, projected Elias Type A and B rankings are included.