One of my favorite free agency trackers is on http://www.pro-football-reference.com/players/2013-free-agents.htm
I prefer to sort by team, old team - do capture than by new team do capture.
Here's a link for the official NFL FA list http://nfllabor.files.wordpress.com/2013/03/03-12-13-free-agency-begins-4-2.pdf
Some of the early surprises to me was the NYJ cutting of NT Pouha and DE DeVito, I guess they'll pick up some rookies or are they really looking at free agents?
BAL trade of WR Boldin to SF, I guess BAL will not win the SB for this upcoming season and so the trend continues. SF is a serious contender again for this upcoming season, though I did notice TE Delanie Walker has signed w/TEN.
BAL let DE/LB Kruger sign elsewhere (CLE), but I wished they had kept him.
KC will win more games this upcoming season, things are clicking w/Reid as HC.
I might just keep updating this with thoughts or something later or perhaps nothing more, until June/July...