Google Chart Tools - Google Chart Tools is a world’s most popular tool that allows users to display their data on their website via simple or attractive visualizations.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Google Data Studio - Data Studio turns your data into informative reports and dashboards that are easy to read, easy to share, and fully custom. Sign up for free.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Chartio - Chartio is a powerful business intelligence tool that anyone can use.
Prometheus - An open-source systems monitoring and alerting toolkit.