Grafana - Data visualization & Monitoring with support for Graphite, InfluxDB, Prometheus, Elasticsearch and many more databases
Chart.js - Easy, object oriented client side graphs for designers and developers.
Mozaik - Mozaïk is a tool based on nodejs / react / d3 / stylus to easily craft beautiful dashboards.
AnyChart - Award-winning JavaScript charting library & Qlik Sense extensions from a global leader in data visualization! Loved by thousands of happy customers, including over 75% of Fortune 500 companies & over half of the top 1000 software vendors worldwide.
Dashing.io - The exceptionally handsome dashboard framework
PlotNeurons - The most simple neural network plotter