What are some alternatives?
When comparing Kernel for PDF Restrictions Removal and PDF Architect, you can also consider the following products
Birdie PDF Security Remover - 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.
PDFsam - PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files
SysTools PDF Unlocker - PDF Unlocker software allows users to remove restrictions from PDF documents. Unlock PDF for copy, print, edit, sign, comment, etc., On any Windows & Mac OS. Also, remove known user-level password & owner level password security from PDF files.
PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
A-PDF Restrictions Remover - For 9.99 $ A-PDF Restrictions Remover is extremely easy to use.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.