Doua aplicatii pentru manipulare pdfuri

http://www.pdfsam.org/

PDF Split and Merge

A free open source tool to split and merge pdf documents

http://pdfarchitect.org/

Easy to use.
Create professional PDFs
with a few clicks.

PDFCreator is free.
Now and forever.
At home and in the office.

Security and control
using encryption,
digital signatures etc.

Professional Features:
merge documents,
send emails and more.