μPlot is a lightweight, fast, memory-efficient Canvas 2D-based chart for plotting time series, lines, areas, ohlc & bars.
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.