Coingecko - CoinGecko is a free to use web-based and mobile application that provides financial market data for more than 2000 digital currencies.
Cryptominded - Where you learn more about cryptocurrencies
CoinMarketCap - Crypto-currency market capitalizations.
Crypto Buyer's Guide - Extensive cryptocurrency buying guide
CryptoCompare - We bring you all the latest streaming pricing data in the world of cryptocurrencies.
Robinhood - Free stock trading service.