I work at quantopian. We are working on broker integration, so you will be able to trade algos you develop live. Our backtesting engine, Zipline, is opensource

I work at quantopian. We are working on broker integration, so you will be able to trade algos you develop live. Our backtesting engine, Zipline, is opensource - https://github.com/quantopian/zipline https://github.com/quantopian/zipline Zipline was unveiled at PyData NYC, and the presentation materials are here: https://app.quantopian.com/posts/hello-from-pydata https://app.quantopian.com/posts/hello-from-pydata