Nitro Pro - An affordable Adobe Acrobat alternative for editing and creating PDF
PDF-XChange Editor - The smallest, fastest, most feature-rich PDF editor/viewer available
online2pdf - This Online PDF Converter can convert all your files to PDF but also compress and merge PDF files! Word, Excel, PowerPoint, images and any other kind of document can be easily converted to PDF on Online2PDF.
PDF Joiner - This online tool allows you to join several PDF documents into a single file, free of charge.
CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
PDFsam - PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files