SmoochBot - Open source on-boarding bot for conversational apps
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.
Message Me - Website to create your contact business card
Hotline - In-app chat,real-time engagement & self-service for your app
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.