Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Smooch.io for Facebook Messenger - Message your customers from Slack, Front, a bot or anywhere!
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
VECA - Your eCommerce assistant
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Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.