148 players filed for free agency today, according to an MLBPA press release. This year's class includes headliners such as Albert Pujols, Prince Fielder, Jose Reyes, and C.J. Wilson. Adam Rubin has the full list of players mentioned in the release at ESPN New York.
Teams have until Thursday at 12:01am ET to exclusively negotiate with their own free agents. If an agreement isn't reached by that point, players are free to sign with any team. Player and team options must be exercised or declined by 11:59pm ET on Monday night, meaning a few more names will be added to the list of free agents at that point.