Robinhood - Free stock trading service.
CoinMarketCal - All crypto events that help crypto traders at one place
Trigger Finance - IFTTT for the stock market
Cryptorch API - Cryptorch API is an AI-powered machine learning utility that is used in forecasting the prices for various cryptocurrencies from Bitcoin to BitTorrent.
SysGears Grain Framework - The simplest way to start investing.
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens