TextBlast Bulk SMS - Send personalized mass messages easily
Datelist.io - Datelist - Online booking system
LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
BetterPT - Schedule your next physical therapy appointment online.
Porterhouse - Send mass iMessage and SMS texts from your existing number with a single click!
Trafft - An online scheduling software that provide support to any business that relay on bookings.