Serif DrawPlus graphics software natively supports exports to PDF, as well as several other graphical formats including the JPG, PNG, which means dpp to pdf conversion or export is possible. Animations may also be exported as videos in SWF, AVI and several other multimedia formats.
As far as we know, there doesn't seem to be any alternative to this as DPP file type as it is proprietary and closed format and only Serif software can work with it.