http://www.calligra.org/get-calligra/ says there was preliminary support for OS X. But the anchor, http://userbase.kde.org/Calligra/Download#Mac_OS_X, is dead and the link given in "We also provide experimental installer on OS X, current version can be downloaded here." (http://download.kde.org/stable/calligra-2.6.0/osx/Calligra-2...) does not exist.

Pretty lame.