Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Dingtone - Dingtone is a free call and texting application for making unlimited calls and text messages to any number at the moment registered in any part of the world by any cellular company.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Textnow.com - It lets you text your friends, aka my only source of happiness
ChatBot - Easy to use chatbot platform for business
FluffyChat - Open. Nonprofit. Cute ?