Mustbin - Everything in one place. Whenever you need it.
TextBlast Bulk SMS - Send personalized mass messages easily
InTouchApp Firefox Extension - Save contacts & data from websites to your phone
Porterhouse - Send mass iMessage and SMS texts from your existing number with a single click!
Cervino - One app for everything you do
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.