Quantopian
QuantConnect
Backtrader
CloudQuant
QuantRocket
Gekko Plus
Intrinio
Quantreex
KiteDesk
Elucify
Lead Forensics
BuiltWith
FindThatLead
LeadCrunch
Prospect.io
GrowBots
Quantopian
KiteDeskQuantConnect - 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.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Backtrader - Backtrader is a complete and advanced python framework that is used for backtesting and trading.
Lead Forensics - B2B website analytics and lead generation.
CloudQuant - Crowd based algorithmic trading development and backtesing for stock market trading.
BuiltWith - Find out the technology behind websites