User-friendly and completely free algorithmic trading platform
Free fast-DOM trading terminal for Schwab, NinjaTrader and Alpaca
Multi-market charts and paper trading for desktop!
Manage accounts, analyze trades, track strategies & stats , News & Cal
The Brutalist Market Analyzer
Python functions for trading
TradeMaster is an open-source platform for quantitative trading
A Powerful Algorithmic Trading Gateway
C# algorithmic trading platform
Free Java components for Quantitative Finance and Algorithmic Trading