Scribus is a desktop open source page layout program with the aim of
producing commercial grade output in PDF and Postscript. It is
primarily, though not exclusively,designed for Linux.

While the goals of the program are ease of use and user-friendly
tools, Scribus offers support for the following professional
publishing features: * CMYK colors

* Easy PDF creation

* Encapsulated Postscript import and export

* Creation of color separations.