Scribus is an Open Source program that brings award-winning professional page layout to Linux/UNIX, Mac OS X, OS/2 Warp 4/eComStation and Windows desktops with a combination of "press-ready" output and new approaches to page layout. Underneath the modern and user friendly interface, Scribus supports professional publishing features, such as CMYK color, separations, Spot Colors, ICC color management and versatile PDF creation.
PowerPC or Intel-based Mac, although using the dual core Intel systems will give a much better experience.
512 Mb in addition to system memory requirements – the more the better. 1-2 Gb or more is strongly recommended for larger or more complex documents.