Linux Operating Systems.

[Caz]

Thanks, I've already downloaded that but what I use is Acrobat 10 itself, the program for creating, managing and editing pdf's and forms.  I use this for my genealogical book publishing amongst other things.

[EtchedPixels]

Libreoffice and openoffice can simply export to PDF which covers some uses.

There are a few more Adobe like alternatives include PDF Studio (which does cover Linux as well as Mac and Windows) . It isn't cheap but does have a trial version and "isn't cheap" is all relative when you check Adobe pricing 

pdfposter is quite handy for printing out model layout designs (it takes a PDF and turns it into a PDF of lots of pages producing a big version of the same content). A few other small apps that are handy including pdfshuffler and pdfchain.

pdfedit is another weapon for PDF hacking - it's a powerful tool but more useful for automation than anything else.

Alan