HiOperator - HiOperator is a virtual assistant that answers phone calls, chats with customers, provides in-app help, takes orders, and provides support.

Drift - A messaging app that helps you grow your business.

Service - Customer service issues solved for you, on demand, for free.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Chat Center - Chat with one click, no matter what messaging app you use

Tars - TARS enables users to create chatbots that replaces regular old webforms.