"Marble is a shining example here - it is a full blown virtual
earth application. But you can integrate it on several levels in
any other application you want and customise it with powerful
additional visualisations. Take KOffice - yes, Marble can integrate
in KOffice. You can have a document, be it a spreadsheet,
presentation or text document, and have a real, interactive map in
there. This clearly shows the power of integration - map
applications aren't new, neither are Office suites. But as far as
we know nobody has combined these before outside of KDE."