Grafana - Data visualization & Monitoring with support for Graphite, InfluxDB, Prometheus, Elasticsearch and many more databases
Plottable.js - Flexible, interactive charts for the web.
Mozaik - Mozaïk is a tool based on nodejs / react / d3 / stylus to easily craft beautiful dashboards.
Chart.js - Easy, object oriented client side graphs for designers and developers.
Dashing.io - The exceptionally handsome dashboard framework
ApexCharts - Open-source modern charting library 📊