OpenBB-finance
Financial data platform for analysts, quants and AI agents.
QuantConnect
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
goldspanlabs
A nimble options research and backtesting library for Python
alpacahq
Alpaca’s official MCP Server lets you trade stocks, ETFs, crypto, and options, run data analysis, and build strategies in plain English directly from your favorite LLM tools and IDEs