MetaTrader5 - World-leading multi-asset platform that allows trading Forex, Stocks, Futures and CFDs.
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.
AmiBroker - Professional tool for individual investor featuring: advanced formula language for writing indicators and trading systems; comprehensive back-testing reports; filtering by sectors; alerts and more...
Quantopian - Your algorithmic investing platform
JStock - JStock makes it easy to track your stock investment.
CloudQuant - Crowd based algorithmic trading development and backtesing for stock market trading.