Free editor for manipulating PDF documents. GUI version + commandline interface. Scripting is used to a great extent in editor and almost anything can be scripted, it is possible to create own scripts or plugins.
Target platform are operating systems of Unix type (Linux, BSD, …), we are using C++, XPDF, QT3 and QSA.
Note: QT3.x is required, editor can’t be compiled with QT4.x. In most distributions both qt3 and qt4 can be installed at once.