Have a look at http://www.collective2.com http://www.collective2.com They have many trading systems, and have automated trading with various brokers. By lookin

Have a look at http://www.collective2.com http://www.collective2.com They have many trading systems, and have automated trading with various brokers. By looking at them, you can probably figure out which brokers have APIs for stocks, forex, options etc. You may even be able to reverse engineer some of their trading algorithms ;)