For many other reasons I use Neo Office instead of Microsoft Office. It's a free open source suite of programs from Sun Microsystems that does everything Office can and more. It reads and writes all the office file formats including the older ones from a time when Mac PowerPoint files were not compatible with PC PowerPoint files.... You get the idea. But one feature I rarely see mentioned is the extremely robust PDF export. So you can open a native .doc file (maintaining all the Microsoft formatting) and then export as a PDF with complete security, font, compression, and versioning control, none of which the generic printer PDF export does. The latest port is always at neooffice.org
Him There are many other ports of Neo Office, the ones I use (and prefer) are available on this site. You can also find links to them all at my download page for the free trial version: Office Download page and for non-free versions: Office Download page — non-free (free trial version) The free version only supports PDF files and a limited number of import formats. There are no PDF exporting or formatting functions, you get a .pdf file. But it only takes a couple of minutes to get started, and it's free! It's been around for some years now with numerous versions supporting Microsoft Windows and Mac OS X (including OS X Mountain Lion), all supported by hundreds of developers and thousands of testers. I have personally tested hundreds (thousands?) of files from hundreds of thousands of customers and never had any problems with Neo Office. No ads, no third party.