Exact Bidding Games
   Overview of rules of: Oh Hell, Ninety-Nine, La Podrida, Israeli Whist and Romanian Whist.
   http://www.pagat.com/exact/

GrandPrix Tournaments
   Official home to The World Series of Hearts, The World Series of Spades and The World Series of Euchre. Also contains tips, tricks and strategies.
   http://www.grandprixtournaments.com

GrandPrixTourneys
   Whist, Euchre, Hearts and Spades tournaments, with an annual national championship of each respective game.
   http://grandprixtourneys.com/

Last Trick Games
   Overview of four games: Chicago, Toepen, Bieten and Agurk/Cucumber.
   http://www.pagat.com/last/

Le Jeu de Tarot
   French game: rules, strategy tips [in French and English]
   http://www.shogix.net

SharksInc.com
   Community of whist and pinochle players.
   http://sharksinc.com/

The 45s Card Game
   Rules and variations of the bidding/trick-based game 45s.
   http://www.the45scardgame.com/

Trick-capturing on Wikipedia
   Encyclopedia description of this family of games.
   http://en.wikipedia.org/wiki/Trick-taking_game