WhatsMany - Send personalised WhatsApp messages in bulk
Pragma - The home base for Ethereum developers.
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Blockbutler - Real-time transaction notifications for the blockchain
Porterhouse - Send mass iMessage and SMS texts from your existing number with a single click!
CryptoNotify - Receive transaction notifications of any BTC or ETH address