Texted.io - Send text blasts to groups, receive individual replies
TextBlast Bulk SMS - Send personalized mass messages easily
Text Blaster - Send thousands of text messages with one tap on Android
Porterhouse - Send mass iMessage and SMS texts from your existing number with a single click!
Nomad SMS - Receive a local SMS anywhere in the world
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.