ExchangeRate-API - An easy to use, free & reliable Exchange Rate API trusted by tens of thousands of developers since 2010!
Robinhood - Free stock trading service.
Fixer.io - Fixer provides a free, simple, and lightweight API for current and historical foreign exchange rates and currency conversion. The API tracks rates published daily by the European Central Bank.
fi360 Toolkit - Other Finance & Insurance
xChangeApi - Easy to use, free live updated foreign exchange rates API
Seeking Alpha - Be the first to know about news and market moving analysis on the stocks you follow.