NoPass.me - Open-source identity verification
CoinBundle - Invest in crypto portfolios with one click and zero fees
Amazon Cognito - Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. It scales to millions of users and supports sign-in with social identity providers and enterprise identity providers via SAML 2.0.
CoinMarketCal - All crypto events that help crypto traders at one place
Civic Token - Access to identity verification via the blockchain
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens