A free good cross-platform CSS editor

There are many applications where you can edit your Cascading Style Sheets (CSS) in Linux, Windows or Mac, but specifically in my Ubuntu I haven't found an application like CSSED (GTK). It supports auto-completion, really useful wizards, color pickers, preview and a long etcetera. You can go directly to the download page and see specific instructions for Gentoo, BSD, Mac OS X (via Fink), Windows ... or if you are an ubuntu or debian user just type in a terminal (or through the synaptic manager):