RHQ Rest API
Check out the RHQ samples project
for samples in various programming languages and
RHQpocket as an example of a
mobile client (Android) of the API.
Misc examples (using D3.js)
Those examples use the powerful D3 library and are rendering the graphs in SVG.
They expect some resources and schedules being present from an initial import with
an empty database (meaning resource ids and schedule ids starting at 10001).