gnome-software : Gnome install and update software ( https://wiki.gnome.org/Apps/Software )
nautilus-image-converter : Adds 'Resize Images' and 'Rotate Images' items to context menu for images ( http://www.bitron.ch/software/nautilus-image-converter.php )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a sabayon
For Paludis use this rsync : rsync://gentoo.zugaina.org/sabayon-portage
If you have a problem : ycarus(-at-)zugaina.org