What it is:
Scribus is an open source desktop page layout program with the aim of
producing commercial grade output in PDF and Postscript, primarily,
not exclusively for Linux.
Scribus can be used for many tasks; from brochure design to
newspapers, magazines, newsletters and posters to technical
documentation. It has
sophisticated page layout features like precision placing and rotating
of text and/or images on a page, manual kerning of type, bezier curves
precision placement of objects, layering with RGB and CMYK custom
colors. The Scribus document file format is XML-based. Unlike
proprietary binary file formats, even damaged documents, can be
recovered with a simple text editor.
To know more about it:
To install in Ubuntu:
sudo apt-get install scribus