SendBird - SendBird is messaging-as-a-service.
Chatroll - Chatroll is the leading provider of interactive tools for social publishers.
Chat by Stream - Build and ship in app messaging in a few hours
LiveHelpNow - Customer Service & Live Chat
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Live800 - Live800 is an enterprise-grade Live Chat and Customer Service platform that enables businesses to provide instant support to their customers through a variety of channels, including Live Chat, Email, Phone, and Social Media.