Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Gomix - The easiest way to build the app or bot of your dreams
ChatBot - Easy to use chatbot platform for business
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Collect.chat - Interactive chatbot for collecting data & feedback
ChatterOn for Messenger - Build Facebook chat-bots in under 5 minutes