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.

E*Trade Web Platform - E*Trade Web Platform is a program that allows users to trade stocks, options, and other securities.

quantra - A public API for quantitative finance made with Quantlib

TT Platform - TT Platform is the most advanced, secure, and user-friendly trading platform in the market.

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

White Label MT4/MT5 - White Label MT4/MT5 is a tool for brokers that want to provide their clients with a customized trading experience.