Fitbod - Personalized Strength-Training powered by Machine Learning
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.
JEFIT - Jefit is the #1 popular gym workout app for Android and iOS. Jefit allows you to manage your training routine and keep track of your workout progress easily.
quantra - A public API for quantitative finance made with Quantlib
Strong.app - Strenght training logger.
Backtrader - Backtrader is a complete and advanced python framework that is used for backtesting and trading.