PDFedit is a free PDF editor for Unix-like operating systems (including Cygwin on top of Windows). It does not support editing protected or encrypted PDF files or word processor-style text manipulation.
License: Open Source
PDF-Shuffler is ideal for simple tasks like merging and rearranging PDF pages with a user-friendly interface, while PDFedit offers advanced editing capabilities including text modification and annotations, making it suitable for more complex PDF manipulation tasks.