Planning Poker® is a collaborative approach used by agile and Scrum teams to estimate their product backlogs. You can read a great deal more about Planning Poker on this site. You can also find out about in Mike Cohn's Agile Estimating and Planning book.

Mountain Goat Software helps you estimate with Planning Poker by selling two styles of Planning Poker cards. These cards are of the highest possible quality and are manufactured by the same company that produces cards for the world's finest casinos.

Mountain Goat Software has also created a completely free to use website for playing Planning Poker online. This site makes it possible for distributed teams to enjoy the same benefits of Planning Poker of collocated teams.