HiOperator - HiOperator is a virtual assistant that answers phone calls, chats with customers, provides in-app help, takes orders, and provides support.
Aivo - Skyrocket your Customer Service and Sales KPIs with a Chatbot powered by Artificial Intelligence. Give time back to people.
Service - Customer service issues solved for you, on demand, for free.
Zendesk Answer Bot - Chatbots
LiveMessage from Salesforce - Make mobile messaging a cornerstone of customer service
Tars - TARS enables users to create chatbots that replaces regular old webforms.