1)   Encrypt PDF 4.0.1.5
PDF Encrypt software is a very flexible and powerful program, it allows you to encrypt (using 40-bit, 128-bit, AES encryption) existing PDF, set permission, add user and owner password. For example you can encrypt a PDF without allowing to print it.
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 2)   Lizard Safeguard PDF Security 2.6
PDF document security with PDF DRM controls. Stop copying, sharing, modifying, screen grabbing. Control the number of views and prints & when documents expire. No useless pdf password security. Complete PDF copy protection and PDF control.
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 3)   PDF Profit Lock 1.00
Don't let your hard work slip down the drain! PDF Profit Lock lets you add password protection, self-expiring files, splash screens, exit pop-ups...even your own icons! If you don't have PDF Profit Lock, you're just throwing money down the drain!
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 4)   LockLizard Safeguard PDF Security - PDC secure viewer 2.5
PDF document security viewer software with DRM controls. View PDC documents protected with Lizard Safeguard PDF Security. No useless passwords to enter in order to view secure pdf files. Free DRM download to view pdf secure document.
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 5)   PDF Creating 2.0
PDF Creating is the fast, affordable way to create professional-quality documents in the popular PDF file format. (Win 95, 98, 2000 and Me, NT 4.0 and XP)
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 6)   pdf encryption Tool 4.0.1.5
pdf encryption Tool is a an advanced and powerful program that allows you to encrypt (using standard 40-bit or 128-bit or AES encryption) existing PDFs, set permissions, add user and owner password. For example you can encrypt a PDF without allowing
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