http://www.mbtrading.com/developersPriceServer.aspx

MBT Quote API was designed for third-party software developers and provides access to the following data feeds:

* NASDAQ Market * New York Stock Exchange - NYSE * American Stock Exchange - AMEX * Toronto Stock Exchange - TSX * INET and ARCA ECN books * CBOE Options quotes * CME Futures Quotes * CBOT Futures quotes * Foreign Currencies 

Under development.