Graphite http://graphiteapp.org/
Graphite is an enterprise-ready monitoring tool that runs equally well on cheap hardware or Cloud infrastructure. Teams use Graphite to track the performance of their websites, applications, business services, and networked servers. It marked the start of a new generation of monitoring tools, making it easier than ever to store, retrieve, share, and visualize time-series data.
Graphite was originally designed and written by Chris Davis at Orbitz in 2006 as side project that ultimately grew to be their foundational monitoring tool. In 2008, Orbitz allowed Graphite to be released under the open source Apache 2.0 license. Numerous large companies have deployed Graphite to production where it helps them to monitor their production e-commerce services and plan for growth.
grafana/grafana: The tool for beautiful monitoring and metric analytics & dashboards for Graphite, InfluxDB & Prometheus & More https://github.com/grafana/grafana