LibreOffice is a complete open source alternative to Microsoft Office. It includes, Writer (word processing), Calc (spreadsheets), Impress (presentations), Base (databases), Math (formula editing), and Draw. Draw is an alternative to Microsoft Publisher for creating multi-page layouts. Open, edit, and create many different file formats including .PUB, .PDF, .DOC, .DOCX, and many more!
Scribus is an open-source alternative to InDesign. With a user-friendly interface, Scribus includes a variety of professional publishing features, such as CMYK color support, spot colors, ICC color management, and PDF creation. Scribus also includes powerful vector drawing tools and support for importing and exporting many different file types.
Believe it or not, most commercially available software has a FREE twin! (Or at least distant cousin!)