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

While the goals of the program are ease of use and simple
easy-to-understand tools, Scribus offers support for professional
publishing features, such as CMYK colors, easy PDF creation,
Encapsulated Postscript import and export, and creation of color
separations.