PDF Security ActiveX 

Encrypt and decrypt PDF files Supports PDF user password and owner password protection Password protect opening of the PDF document Disable printing of the PDF document Disable copying of text/graphics
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Encrypt & Decrypt PDF 

Encrypt & Decrypt PDF allows you to Encrypt and Decrypt protected Adobe Acrobat PDF files in batch mode. With this software, you may freely secure your PDF files from being printed, changed, copied, extracted, signed of your PDF files.
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PDF Password Remover 

The PDF Password Remover can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password set.
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