Quantopian - Your algorithmic investing platform
Plaid - Infrastructure that powers financial technology by enabling applications to connect with users' bank accounts.
CloudQuant - Crowd based algorithmic trading development and backtesing for stock market trading.
QuoteMedia - Financial web tools that allow users to access real-time stock quotes, with live charts and NASDAQ level 2 data.
quantra - A public API for quantitative finance made with Quantlib
Digital Insight - Digital Insight provides digital banking solutions to mid-market banks and credit unions.