PDFedit is free and open source library for manipulating PDF documents, released under terms of GNU GPL version 2. It includes PDF manipulating library based on xpdf, GUI and set of command line tools.
Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).
Multiple platform library working on Unix systems, Windows32/64 and also Windows CE and others. You can use it to read, change and extract information from a PDF file. It is based on xpdf library.
for details, please visit http://pdfedit.petricek.net/en/index.html or http://sourceforge.net/projects/pdfedit/
btw, PDFedit is also a PDF reader.
RubyPDF Blog Linux,PDF,Softwares,Windows Pdfedit is a Free and Open Source PDF Editor and Support Multiple Platform