PDFUnlocker is a nice, free program only available for Windows, that belongs to the category Security software with subcategory Password (more specifically Revealers).
More about PDFUnlocker
About the download, PDFUnlocker is a program that needs less free space than the average program in the section Security software. It's a software very heavily used in Islamic Republic Of Iran, Greece, and United States.
Since the program has been added to our selection of programs and apps in 2011, it has obtained 43,331 downloads, and last week it had 30 downloads.
It's available for users with the operating system Windows XP and former versions, and it is available in English. The program version is 1.0 and was updated on 10/6/2011.