There are 39 repositories under algorithmic-trading-library topic.
A curated list of insanely awesome libraries, packages and resources for Quants (Quantitative Finance)
A cryptocurrency trading bot and framework supporting multiple exchanges written in Golang.
A nimble options backtesting library for Python
A Python-based stock screener for NSE, India. PKScreener is an advanced free stock screener to find potential breakout stocks from NSE and show its possible breakout values. It also helps to find the stocks which are consolidating and may breakout, or the particular chart patterns that you're looking specifically to make your decisions.
Python library for backtesting technical/mechanical strategies in the stock and currency markets