Did you ever got any PDF file from your friend and find that file is password protected and when you try to contact friend you were unable.
You had created a password protected but you forgot your password, now what to do and how to see those documents.
PDFUnlocker is a freeware,It unlocks the PDF using a Brute Force algorithm. PDFUnlocker saves the unlocked file separately leaving the original file as it is.
To unlock any file you have to select the file and then choose the path where you wanna get unlocked file,You also require to specify the minimum and maximum length of password so that Brute Force will do its job.
As long as password will be as long as time it will take to unlock it.
You will need a Windows OS with JAVA installed
You may use following link to download it :-