Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Gomix - The easiest way to build the app or bot of your dreams
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
Motion.ai - Motion is AI based bot builder enabling users to visually build, train and deploy bots to do just about anything.
JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.