To keep track of all details related to free agent signings throughout the offseason, be sure to bookmark MLBTR's 2013 MLB Free Agent Tracker. The tracker allows you to filter free agents by many criteria: team, position, signing status, years, and dollars. Plus, we recently made it possible to filter free agents according to whether they obtained, accepted and declined qualifying offers.
You can also link to your search results, which makes them easy to share. For example, if you're looking to know which unsigned outfielders declined qualifying offers, you're just a few clicks away from discovering the answer.
For the most part, our cutoff for a player's inclusion on the tracker is 50 MLB plate appearances or 20 innings pitched in 2012. We also have a basic list that shows which free agents remain available at each position.