There is a number of on-line Futures Forex Brokers offering their services to potential traders. Futures Contract is a kind of derivative contract between parties that oblige a seller to sell and a buyer to buy a specified quantity of specified underlining asset at market determined price (the futures price) at a specified date in future. The major underlining asserts are commodities, securities, currencies, and financial derivatives such as rates and indexes. Futures Contracts have much in common with Options Contracts. Actually the greatest difference is that a buyer of an Option Contract have a right but is not obliged to buy or sell some asset from other party during the agreed period of time at an agreed price. So an Option Contract may either be executed or not. While parties of a Futures Contract must fulfill it. Futures Contracts are rather popular with Forex Brokers because they have a good potential for speculation. 
Here is the list of Forex Brokers working with Futures Contracts.