MetricsGraphics.js is a library optimized for visualizing and laying out time-series data. It provides a simple way to produce common types of graphics in a principled, consistent and responsive way.
The library currently supports line charts, scatterplots and histograms as well as features like rug plots and basic linear regression.
Epoch is a general purpose real-time charting library for building beautiful, smooth, and high performance visualizations.
It focuses on two different aspects of visualization programming: basic charts for creating historical reports, and real-time charts for displaying frequently updating timeseries data
Morris.js is the library that powers the time-series graphs. It's a very simple API for drawing line, bar, area and donut charts.