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.
Speaklyn - Website visitors chat with you on Facebook Messenger
Message Me - Website to create your contact business card
Firehose Chat - firehosechat.com
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.