Ping, but with a graph
Yet another cross-platform graphical process/system monitor
Toolkit for working with and mapping geospatial data
Attractive JavaScript charts for jQuery
JavaScript toolkit for creating interactive real-time graphs
A WebGL-based 3D engine for technical visualization
WebGL visualization for displaying animated traffic graphs
Infographic which shows the members of Boards of Public Policies.
Inkscape extension to add and edit GNUplot graphs