pdfsam
- pdfsam is an open source tool (GPL license) designed to handle pdf files.
PDFelement
- Wondershare PDFelement can help you convert any PDF (even one created from a scan) to any format, as well as allow you to edit, annotate, or sign it.
PDFs Split & Merge
- Split large PDF documents into single-page or short multi-page PDFs.
PDF Professional
- Read, annotate any PDF file. It is allows you to write down your thoughts while reading.