For those PDF files which are protected with password, i.e.: not permitted to edit, change, print, copy, add annotations, etc. At this time, we can turn to VeryPDF PDF Password Remover, with its help we can unlock these limitations easily by removing the password of PDF file.
For archived files (mainly RAR or ZIP format), that is very embarrassed and depressed in two cases. First, the archive file downloaded from the Internet prompts you need password to extract it out; Second, some important archive was protected using your own password, but you just forgot it. If so, turn to the Advanced Archive Password Recovery for help.