Support Hero - Educate your customers through self-help support
Pragma - The home base for Ethereum developers.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Blockbutler - Real-time transaction notifications for the blockchain
DataBasic - Easy-to-use web tools for beginners
CryptoNotify - Receive transaction notifications of any BTC or ETH address