Jasper - Jasper is an open source platform for developing always-on, voice-controlled applications.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Pullstring - Powering computer conversation across all platforms.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
ChatterOn for Messenger - Build Facebook chat-bots in under 5 minutes
ChatBot - Easy to use chatbot platform for business