What are some alternatives?
When comparing SysTools PDF Unlocker and iSafePDF, 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.
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.
QPDF - QPDF is a command-line program that does structural, content-preserving transformations on PDF...
Appnimi PDF Unlocker - Appnimi PDF Unlocker Appnimi PDF Unlocker is a utility which will help you recover passwords of pdf files using Dictionary and Brute Force methods.
LockPDF - Password protect and encrypt your PDF files online