1)   PDF Encrypt COM/SDK Unlimited License 3.0
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit or AES encryption ) existing PDFs, set permissions, add user and owner password.
PDF Encrypt, Encrypt PDF, PDF Encryption, PDF Secure, PDF Security, PDF Protect, PDF Protector, PDF Protection, Adobe pdf file, Acrobat,

 2)   PDF Encrypt COM/SDK 3.0
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit or AES encryption ) existing PDFs, set permissions, add user and owner password.
PDF Encrypt, Encrypt PDF, PDF Encryption, PDF Secure, PDF Security, PDF Protect, PDF Protector, PDF Protection, Adobe pdf file, Acrobat,

 3)   ap PDF Encrypt 3.0
PDF Encrypt allows you to encrypt (using standard 40-bit or 128-bit or AES encryption ) existing PDFs, set permissions, add user and owner password.
PDF Encrypt, Encrypt PDF, PDF Encryption, PDF Secure, PDF Security, PDF Protect, PDF Protector, PDF Protection, Adobe pdf file, Acrobat,

 4)   Ap Text To PDF 2.2
Text To PDF ( txt2pdf ) is a program to convert ASCII texts into PDF format with a minimum loss of formatting information. support command line, batch convert, encryption, page orientation,font setting etc.
text to pdf, txt to pdf, text2pdf, txt2pdf, command line, Searchable text, encryption, page alignment, Batch convert, orientation,

 5)   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!
pdf, pdf software, pdf security, pdf protect, pdf password protect, document protect, password protect a document, pdf password,

 6)   Lizard Safeguard PDF Security 2.6
PDF document security software with DRM controls. Control who can view PDF documents & how they are used. Prevent copying, sharing, modifying, screen grabbing. Control the number of views and prints & when documents expire. No useless passwords.
Pdf security, pdf document security, pdf security software, pdf drm, pdf password, pdf secure, pdf secured, pdf protection, pdf protected, pdf file security,