OpenOffice.org Draw, Impress
Source (required if based on other people's work):
OpenOffice.org is a free productivity suite compatible with all major office suites.
OOo Impress is the fastest, most powerful way to create effective multimedia presentations. Your presentations will truly stand out with special effects, animation and high-impact drawing tools.
OOo Draw is a graphics editor that will produce everything from simple diagrams to dynamic 3D illustrations and special effects.
This version contains KDE integration: KDE Native Widget Framework, KDE Crystal icons, and KDE file dialog.