Quantopian also builds and maintains Zipline, and Alpaca has built an integration to allow the Quantopian community to easily run algorithms with Alpaca’s commission free trading API.

Alpaca, a Silicon Valley based API stock brokerage for developers and bots, launched the worlds first commission-free automated trading platform driven by algorithms, trading bots and artificial ...

Algorithmic (algo) trading is a trading strategy that uses computer programs with predefined criteria to automatically execute trades.