JHeatChart is a one class Java API for generating heat map charts that was created because very few charting APIs seem to contain the facility to create heat maps. It is not a full featured charting API and cannot be used to other charts. The generated charts are created as Java Image objects, which can be incorporated into a GUI or saved to a file.
Greenhorn displays documentation strings directly from the source code itself, which is handy if you use or write your own modules whose documentation is not keeping pace with development. It uses the PyGTK treeview widget to display a tree diagram of modules in a window. Clicking on individual modules displays . __doc__ strings and sub-modules or functions. Source code can also be browsed, if available, using Python inspect.