QuantConnect - QuantConnect provides a free algorithm backtesting tool and financial data so engineers can design algorithmic trading strategies. We are democratizing algorithm trading technology to empower investors.

Vantage Point - Vantage Point provides a full range of solutions for the unique business challenges faced by broadband and data network operators.

quantra - A public API for quantitative finance made with Quantlib

Black Box Stocks - Black Box Stocks is an intelligent stock trading platform that comes with the most user-friendly way to make your prediction more valuable and precise.

Backtrader - Backtrader is a complete and advanced python framework that is used for backtesting and trading.

Kavout - Kavout is an investing platform that has been providing great support with artificial intelligence and machine learning support to make your predictions and forecasting to be always accurate.