Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Olyo - Direct marketing via Facebook Messenger
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Upcado - Super easy to use Messenger Marketing tool for your business
ChatBot - Easy to use chatbot platform for business
Conte.ai - Conte.ai is a modern web-service for businesses of all sizes from any industry