GSView Alternatives

PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.

PDFTools

As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

Try for free paid Free Trial $15.0 / Monthly (125+ Documents)

QPDF is a command-line program that does structural, content-preserving transformations on PDF...

Open Source

PyPDF2 - A utility to read and write pdfs with Python

iSafePDF is a free open source PDF protection software.

Password protect and encrypt your PDF files online

PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files

Open Source free

For 9.99 $ A-PDF Restrictions Remover is extremely easy to use.

UnityPDF lets you merge, split, divide, rotate, protect PDF files and more.

Advanced PDF Utilities Free helps deal with PDF files such as to merge or split pages, convert PDF to text & convert image to PDF or vice versa.

Locklizard Safeguard PDF Security provides total PDF DRM protection and control over your documents...

paid Free Trial

Remove PDF Printing, Copying, Modify and Editing restriction with PDF Security Remover. Unlock Owner Password PDF security in batch to open and edit locked PDF file.

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.