A total of 22 players that finished the year in Triple-A elected free agency after the end of the regular season according to the transaction pages of the Pacific Coast and International Leagues. All but one of those 22 players (Matt Carson, formerly of the Rays) played in the big leagues this season. Here's the full list:
Dusty Brown (Pirates), Travis Buck (Indians), Armando Galarraga (D'Backs), Jay Gibbons (Dodgers), Edgar Gonzalez (Rockies), Steve Holm (Twins), Wil Ledezma (Blue Jays), Andy LaRoche (Athletics), Felipe Lopez (Brewers), Lastings Milledge (White Sox), Pat Misch (Mets), Pat Neshek (Padres), Mike O'Connor (Mets), Matt Palmer (Angels), Felix Pie (Orioles), Brad Snyder (Cubs), Brett Tomko (Rangers), Wyatt Toregas (Pirates), P.J. Walters (Blue Jays), Randy Williams (Red Sox), and Reggie Willits (Angels).