What are some alternatives?
When comparing iCalamus and Microsoft Publisher, you can also consider the following products
Zmags - Zmags provides solutions create and publish web experiences instantly.
Adobe InDesign - Adobe InDesign is a desktop publishing software application.
Adobe FrameMaker - A desktop publishing (DTP) and word processing application that is popular for large documents.
Scribus - Scribus is a desktop publishing (DTP) application.
Readymag - Readymag is a comprehensive solution that allows you to design web publication, magazines, presentations, websites, and all the other publications.
QuarkXPress - Design and layout tool for print and digital publishing