CoinMarketCal - All crypto events that help crypto traders at one place
Blockchain Demo - Visual demonstration of blockchain technology
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens
OpenSea - Ebay for cryptogoods. Buy and sell items on the blockchain.
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.
Santiment.net - Your one-stop source for clarity in crypto. Track assets and spot trends using the most comprehensive on-chain, social and development data available.