Real-time performance monitoring, in the greatest possible detail.
Netdata is the fastest way to visualize metrics. It is a resource efficient, highly optimized system for collecting and visualizing any type of real-time timeseries data, from CPU usage, disk activity, Network and QoS traffic, SQL
... [More] queries, API calls, web site visitors, etc.
Netdata tries to visualize the truth of now, in its greatest detail, so that you can get insights of what is happening now and what just happened, on your systems and applications.
For collecting data, it supports external plugins, even shell or node.js plugins. Any computer program, in any language, that can print a few lines of text on its standard output, can be a netdata data collector. [Less]
Collection of FluentD plugins. FluentD is the "cross platform open-source data collection software project originally developed at Treasure Data. It is written primarily in the Ruby programming language" (English Wikipedia: https://en.wikipedia.org/wiki/Fluentd ).