Freeware Office Alternative and PDF Creator

OpenOffice - OpenOffice is a multi-platform freeware Microsoft Office alternative that is competing with Office in many markets around the world. It provides much of the same functionality of the Microsoft Office software suites and allows you to easily create documents and presentations. It also allows you to export your documents as PDF files. (Freeware, Windows, Mac and Linux)

Create PDF files from documents

PDF Creator - This open source software allows you to create PDF files from most Windows applications. Also supports document conversion to the following formats: PNG, JPG, TIFF, BMP, PCX, PS, EPS. (Freeware, PC)