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.

Ark7 - Choose a property and invest in shares

quantra - A public API for quantitative finance made with Quantlib

RealtyShares - Real Estate Investing in 20 Minutes

Backtrader - Backtrader is a complete and advanced python framework that is used for backtesting and trading.

Cash Flow Portal - Real-estate syndication software that accelerates capital raising. We make it easy for GPs to raise money, streamline operations, and reach investors to win more deals than ever before.