Pragma - The home base for Ethereum developers.
Coinzy - Top need-to-know crypto news in less than 8 minutes a day
Blockbutler - Real-time transaction notifications for the blockchain
Coinwink - Crypto alerts, watchlist and portfolio tracking app for Bitcoin, Ethereum, and other 3500+ crypto coins and tokens
CryptoNotify - Receive transaction notifications of any BTC or ETH address
Coin Demo - Visual demonstration of how bitcoin transactions work