Smarkets is a sports betting exchange with a commission rate of 2%.

The alternative betting exchange.

Betting exchanges are like eBay, they bring together people who seek better value by cutting out the high street.

To improve liquidity, Betfair uses cross-matching to advertise an unmatched bet to as many customers as possible.

How betting exchanges changed how we bet.

A betting exchange API enables exchange customers or third party developers to create custom applications that automate betting activity. The API enables users to read live market data, place bets and check their account statement without having to use the betting exchange web site.

Bookmaking, like dutching, uses bets placed simultaneously on multiple selections to eliminate the unlikely outcomes and divide the locked in profit between the remaining selections. Unlike dutching, however where you are backing your selections, with bookmaking you lay the selections.

Matchbook is a sports betting exchange who is attempting to build its customer base and hence its market liquidity by charging a low commission, currently 1% for non UK based customers.