Carrd - Simple, responsive one-page site creator.
Zendesk Answer Bot - Chatbots
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Aivo - Skyrocket your Customer Service and Sales KPIs with a Chatbot powered by Artificial Intelligence. Give time back to people.
Message.io - Make your chat bots cross-platform
Tars - TARS enables users to create chatbots that replaces regular old webforms.