PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
PDF to JPG - PDF to JPG is used to convert PDFs to JPG, PNG, BMP, TIF, GIF, PCX and TGA images in batch mode. It works without Adobe Acrobat or Adobe Reader, and has Command Line Interface (CLI), fast and accurate conversion ability, friendly GUI, small size.
PDF Arranger - Small python-gtk application, which helps the user to merge or split pdf documents and rotate, crop...
UnityPDF - UnityPDF lets you merge, split, divide, rotate, protect PDF files and more.
Debenu PDF Tools - Simple to use solution to merge PDF files, edit document properties, add and edit custom metadata, convert images to PDF, convert PDF to text and much more.
PDFsam - PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files