No features have been listed yet.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
CometChat - Seamless Real-Time Chat Integration for Your Applications.
Plivo - Plivo simplifies your customer engagement.
MQTTCHAT - A complete chat solution for your web site for $1 only
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
MarketPress - MarketPress is the best free eCommerce plugin available for WordPress.