What are some alternatives?
When comparing PDFsam and Birdie PDF Security Remover, you can also consider the following products
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.
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.
PDFill - Open, View, Edit, Save and Print PDF Documents without Adobe Acrobat
PDF Password Remover Tool - PDF Password Remover Tool. Free PDF password remover tool by PDF Technologies. Remove passwords from PDF documents.
PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
Stellar Phoenix PDF Recovery - Stellar Phoenix PDF Recovery repairs corrupt or damaged PDF files and restores forms...