1)   eBookGuard Document Protection 3.0
eBookGuard: This program is for authors who want to sell or distribute text material online. This program will encrypt your text files or rich text formatfiles. This includes an eBook reader for displaying the document. Users cannot copy your files.

 2)   Prodos 1.1
Prodos - Professional Document Security is a cutting edge document protection and management application, designed to protect any files and documents by placing these items in an electronic "safe".