python
Chaco is a Python plotting application toolkit and a part of
Enthought Tool Suite. It is meant to facilitate writing plotting
applications of all levels of complexity, from simple scripts with
hard-coded data to large plotting programs with complex data
interrelationships and a multitude of interactive tools. While Chaco
generates nice static plots for publication and presentation
purposes, its components are all designed to be work well for
interactive data visualization.
chaco