Scribus is a Desktop publishing software, similar to Adobe InDesign. Scribus is a free and open source software, it’s available for all common platforms such as GNU/Linux, Mac OS X, Windows etc.
It has simple and easy to use interface. It has lots of features including Color Separations, CMYK and spot colors etc. Scribus is widely used for creating newsletters, posters, books, brouchures and quality pdfs/presentations.
Where to get Scribus ?
If you’re using a GNU/Linux distributions such as Ubuntu, then you can install it in one simple command (for other distributions you should checkout their repository manual) -
sudo apt-get install scribus
To download/install Scribus on other operating systems, read instructions on official website .