And LibreOffice, like StarOffice is based on VCL, their internal toolkit. There is a Qt version of that too.[/QUOTE]
What you mean with there's a QT version too? I don't see why don't replace VCL with Qt wich would remove the wrapper for every plattform.
KDE integration of LibreOffice 4.0 is still extremely crappy if anybody cares.
Users of LibreOffice under a KDE Workspace are better off using LibreOffice’s GNOME integration with the GTK port of the Oxygen theme.
Tested LibreOffice in its latest version. Despite some improvements I still prefer FreeOffice because of its much better compatibility to Microsoft Office formats (which most of my friends and colleagues use), its better UI, reliability, and speed. It's not as good as the commercial version SoftMaker Office, but the best free office suite.