Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
NoPass.me - Open-source identity verification
Bitcoin Wallet - Bitcoin Wallet is a mobile application that allows you to send and receive digital currencies.
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.
BitStamp - Provide reliable and easy to use service for companies and individuals to exchange bitcoins.
Civic Token - Access to identity verification via the blockchain