freecad : QT based Computer Aided Design application ( http://www.freecadweb.org/ )
ktikz : A Qt-based editor for the TikZ language (fork) ( https://github.com/jfmcarreira/ktikz )
sK1 : An open source vector graphics editor similar to CorelDRAW(tm). ( http://sk1project.org )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a dev-zero
For Paludis use this rsync : rsync://gentoo.zugaina.org/dev-zero-portage
If you have a problem : ycarus(-at-)zugaina.org