What are some alternatives?
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Salt - Fast, scalable and flexible software for data center automation
Socket.io - Realtime application framework (Node.JS server)
Python Fabric - Fabric is a Python library and command-line tool for streamlining the use of SSH for application...
PubNub - PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.