Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

Open source software that helps you create and deploy high-frequency crypto trading bots

Python Backtesting library for trading strategies

Code for Machine Learning for Algorithmic Trading, 2nd edition.

基于Python的开源量化交易平台开发框架

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go