PDF and PS manipulation for printing needs

 Converts PDF and PS files to new PDF and PS documents with several
 sheets on the same page, or with resized or rotated sheets. It also
 can generate a book ready to print.
 .
 It acts as a graphical frontend to psutils programs, like psnup and
 psbook, and runs viewers such as xpdf and gv for preview once the
 processing is done. The GUI is made in Tcl/Tk.