PDF Unlock is a free online tool if you want o remove restrictions from a file and copy/edit content from the file. Just upload the file and you will get the unrestricted file.
Free PDF Unlock Online Utility is also a similar online tool. It opens the PDF file in a new browser window after cracking it.
PDF Pirate also an online utility removes restrictions from the uploaded file and returns it through a download
PDF Filler is an online tool which lets you upload any PDF file and start editing and adding text to it and filling PDF forms.
Freeware PDF Unlocker is an installable software which removes restrictions from the PDF as well as the passwords which prevent you from accessing the file.
PDF Password Unlocker 3.0 is a shareware which lets you recover and remove PDF file access passwords. It also removes copy/edit restrictions.
PDF to Word Converter is also a shareware which allows you to extract text from PDF files and effectively convert them to text files.