HiOperator - HiOperator is a virtual assistant that answers phone calls, chats with customers, provides in-app help, takes orders, and provides support.
Zendesk Answer Bot - Chatbots
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Aivo - Skyrocket your Customer Service and Sales KPIs with a Chatbot powered by Artificial Intelligence. Give time back to people.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Tars - TARS enables users to create chatbots that replaces regular old webforms.