calligra  2.9.11
About: Calligra Suite is a graphic art and office suite (requiring KDE and QT components). It contains applications for word processing, spreadsheets, presentation, databases, vector graphics, and digital painting. Calligra uses the OpenDocument format but can import other formats, such as Microsoft Office formats.
  Fossies Dox: calligra-2.9.11.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

calligra Documentation