Below are some good links to track the off-season free agency.
For my money, the best sortable list is ESPN’s Free Agent Tracker but Sport City’s and MLB Trade Rumors’ both list them qualitatively and sometimes with a little commentary.
Sports City’s Top 25 Free Agents
MLB Trade Rumors Top 50 Free Agents
Cot’s Baseball Contracts Free Agent position players/ pitchers
The Cot’s link is new to me but I had fun looking through their site earlier today. The site is not organized in a sorted list format rather it has very detailed information for each player. Alternatively, you can find a page for each team which has detailed salary and transaction information for each player.