PDFsam Basic extremely useful tool for splitting and merging PDFs in a configuration that suits you.

PDF Studio is a commercial software program for end-users to create, review, annotate, and edit PDF (Portable Document Format) documents.

FileCenter is a collection of tools for document management, scanning and file organization with powerful PDF creation and editing.

PDF-Tools is a flexible & power wizard-driven application for batch creating, manipulating, and modifying PDF files.

PDFill allows users to alter existing PDFs or create documents from scratch.

qvPDF is a PDF creator for Windows. It's implemented as printer driver and uses plugins to execute different actions after creating the PDF.

jPDF Tweak is a Java Swing application that can combine, split, rotate, reorder, watermark, encrypt, sign, and otherwise tweak PDF files.