Betting Exchanges Over the past few years, there has emerged a second type of betting company next to the traditional Bookmakers - namely the Betting. Betting exchanges list. Betting companies come and go. They merge to form bigger companies. Or they mutate into completely different types of company. Betting Exchanges. At a Betting Exchange, the bets you place are against other punters rather than the bookmaker. This results in two key benefits - the ability to.