Icinga vs Shinken: What are the differences?
Icinga: A resilient, open source monitoring system. It monitors availability and performance, gives you simple access to relevant data and raises alerts to keep you in the loop. It was originally created as a fork of the Nagios system monitoring application; Shinken: Nagios compatible monitoring framework, written in Python. Shinken's main goal is to give users a flexible architecture for their monitoring system that is designed to scale to large environments. Shinken is backwards-compatible with the Nagios configuration standard and plugins. It works on any operating system and architecture that supports Python, which includes Windows, GNU/Linux and FreeBSD.
Icinga and Shinken can be categorized as "Monitoring" tools.
Shinken is an open source tool with 1.08K GitHub stars and 355 GitHub forks. Here's a link to Shinken's open source repository on GitHub.