TextBlast Bulk SMS - Send personalized mass messages easily
Texted.io - Send text blasts to groups, receive individual replies
Porterhouse - Send mass iMessage and SMS texts from your existing number with a single click!
SeaLights - SeaLights is the first cloud-based Continuous Testing platform that helps companies increase code quality while increasing release speed
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Rocket for WhatsApp - WhatsApp marketing chrome extension