Notif.me SDK - A Node.js lib to send all your transactional notifications
Blockchain Demo - Visual demonstration of blockchain technology
Clank - Explore the biggest crypto transactions across blockchains
Explain Me Please - Complex topics explained for your level and background
Pusher - Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Coinzy - Top need-to-know crypto news in less than 8 minutes a day