gut gemachter pdf viewer in flash
Google-Mail druckt DRM-PDFs - und bricht damit deutsches Urheberrecht?
"Set Passwords and Infomation to PDF" can set User/Owner passwords and Tilte/Subject/Keyword/Author/Creator information to PDF file. It contains the command line tool 'pdfauxinfo' and 'Add Auxiliary Info to PDF' Automator action, and therefore it's for Mac OS X. Automator action uses command line internally.