Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
ChatBot - Easy to use chatbot platform for business
tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page