An html5 open source dashboard framework. It's a mature solution with many features and well documented. Here the main features:
Complete set of dashboard elements
Includes all the components that you need to build dashboards in a single package.
Light and Fast
Built with mobile devices in mind, RazorFlow Dashboard Framework is engineered for the fastest load times.
Supports Industry-Standard Column, Pie, Bar, Line charts and more.
Dashboards can be updated in real-time without having to reload the page, and are compatible with web sockets.
The theme-builder allows you to change the look of your dashboard in just a few clicks.
Built for touch
All dashboards work great on touch devices like smartphones and tablets, with no extra work.
Embed and integrate
Razorflow has a well-designed set of APIs to build your first HTML5 dashboard in under an hour, which works across platforms and devices.
A comprehensive documentation, pre-build dashboards and an extensive feature gallery help you get started fast.
More details here
. The source code can be downloaded for free here