CoinMarketCap - Crypto-currency market capitalizations.
CoinArbitrage - Crypto Currency Price Monitor in Real time with Alerts and Notification through email, sms, Desktop Notifications Instantly and watch all of your assets and coins in one place with 16 Exchanges, 6500+ Coin (bitcoin, etherum, dogecoin,litecoin,ripple)
Coingecko - CoinGecko is a free to use web-based and mobile application that provides financial market data for more than 2000 digital currencies.
BitInfoCharts - Price, reward, difficulty, hashrate, market capitalization, block time, blocks count for all the...
CryptoCompare - We bring you all the latest streaming pricing data in the world of cryptocurrencies.
Stampery - Stampery generates legally binding proofs of existence, integrity and ownership.