By "real time" presumably you mean tick data. This is generally not available for most contracts on most exchnages unless you are prepared to stump up a fair we

By "real time" presumably you mean tick data. This is generally not available for most contracts on most exchnages unless you are prepared to stump up a fair wedge of cash. However, i did once find on some russian website per-second historical data for various currency pairs - although I forget the site now. However depending on your trading strategy I doubt you'll need tick data. You may be able to find per-5-minute data for free on some stuff. And EOD is generally free for most contracts.