Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
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
Message Me - Website to create your contact business card
JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.