PDF editor

DISCLAIMER: while we keep this section for reference, we strongly discourage the use of proprietary software, since it violates fundamental user freedoms.
 
List of PDF editor software under linux:

• Foxit Phantom PDF, the best choice with Ubuntu 11.10. Versions Suite 2.2.4 and Business Edition 5.0.1 have been reported to work very well with WINE.
• Xournal, the best choice in my opinion. It turns the PDF file into an image that can be annotated. Then, the file can be exported as PDF;
• PDFEdit, highly unstable;
• Okular is the only tool that actually has a real annotation tool for PDFs. However, the annotations are not saved withing the PDF, but written separately. This makes them unusable for any other reader;
• PDF-XChange Viewer via WINE. Under Fedora 12 it did not work. It works with Ubuntu 11.04 (natty), PDF-XChange Viewer v.2.50.193 and Wine 1.2.

Ref: gnurou, linux.aldeby.org.