Advanced PDF Password Recovery decrypts protected Adobe Acrobat PDF files that have an owner password set. The owner password prevents the file from being edited, printed, and so on. This program can also decrypt files protected with FileOpen plug-in. Decryption is done instantly. Decrypted files can be opened in any PDF viewer (such as Adobe Acrobat Reader) without any restrictions.
Version 1.31 adds support for Acrobat 5 (PDF 1.4) and for the FileOpen 2.4 plug-in, as well as several bug fixes.
Note: This unregistered version decrypts only the first 10 percent of pages (but at least one page) of the documents, replaces all other pages with blank (empty) ones, and doesn't support the command-line interface. The registration fee is $30.