Free PDF Unlocker is a simple and useful application that can remove all kinds of restrictions on PDF files.

It works by removing passwords that restrict access in two areas. One is for passwords that restrict some functions such as printing copying and pasting. The second is any password that might prevent you from accessing or opening a PDF file.

To remove the first type of restrictions, just drag your PDF file onto a link on your desktop or alternatively onto the Free PDF Unlocker icon on your desktop. Instantly, Free PDF Unlocker should remove

Pros

  • Simple to use
  • Can help
Cons

  • Only unlocks one file at a time
  • Doesn’t work with new PDF files

http://jayaprakashkv.blogspot.com/2008/06/download-free-pdf-unlocker.html