Quantopian
QuantConnect
Backtrader
CloudQuant
QuantRocket
Gekko Plus
Intrinio
Quantreex
GameOn
OutyPlay
Axir
ChucK
Player.me
Smatchy
Boulder Creator
Strava
GameOnQuantConnect - 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.
OutyPlay - Join sports matches, create your own games and tournaments
Backtrader - Backtrader is a complete and advanced python framework that is used for backtesting and trading.
Axir - Need more active friends?
CloudQuant - Crowd based algorithmic trading development and backtesing for stock market trading.
ChucK - A strongly-timed music programming language