Free Forex Market data
Check out Barchart's free makret data api includes 3 months worth of min forex data, 15 min delayed and daily historical
http://freemarketdataapi.barchartondemand.com
You should check out Barchat OnDemand's Free Market Data API. They supply a good amount of historical data for free. http://freemarketdataapi.barchartondemand.com