Notif.me SDK - A Node.js lib to send all your transactional notifications
Coinzy - Top need-to-know crypto news in less than 8 minutes a day
Pusher Beams - Send push notifications programmatically at scale
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens
Instapush - Instant notifications for transactions that matter.
Coin Demo - Visual demonstration of how bitcoin transactions work