Blockbutler - Real-time transaction notifications for the blockchain
Amio Messaging SDK - Develop for multiple messengers using JavaScript
CryptoNotify - Receive transaction notifications of any BTC or ETH address
Notif.me SDK - A Node.js lib to send all your transactional notifications
Postman for Mac (Beta) - Build, test, and document your APIs faster
Kids App Hunt - Let's talk about the best apps for kids