PDF24 PDF Creator - Create PDF and convert documents to PDF for free with the free PDF24 PDF Creator.
PDFtk - PDFtk is a simple tool for doing everyday things with PDF documents.
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.
Pdfinfo - Pdfinfo is a PDF document information and metadata extractor tool.
Merge PDF (by Smallpdf) - No file limit, no ad watermarks - a free and beautiful tool to combine your PDF files exactly the way you want it.
Edit PDF metadata - Edit PDF metadata is an online tool from PDFCandy that can manipulate PDF info and metadata.