It's Office Library basic edition, including all features of EasyOfficeLib.
CryptOfficeLib provides more powerful and more convenient encryption protection for Microsoft Office files.You can input password once, and open many password-protected office files.

Without CryptOfficeLib installed, these protected files can't be opened in other computers.
In addition to provide public libs like EasyOfficeLib, CryptOfficeLib also provides encrypted libs.When you open an encrypted lib, a password dialog box will appear.Enter the correct password; the task pane with encrypted lib tree will be displayed.

This task pane allows you to create new protected files or open protected files to edit; and never prompt password dialog again.

CryptOfficeLib allows you to change a public lib to an encrypted lib, if you do so, all the files in the public lib will be encrypted.CryptOfficeLib also allows you to change an encrypted lib to a public lib, and when you do it, all the files in the encrypted lib will be decrypted.
CryptOfficeLib provides another encryption method.You can deploy your office files to encrypted exe files with password.

These exe files can be run in other computers without CryptOfficeLib installed.When others run these exe files, it will prompt password dialog box.Enter the correct password, the exe files will be decrypted to the original office files and opened in the related Microsoft Application.
Features:

Enter password once, open many encrypted office files.
Automatically encrypt your office files.
Allow to change a public lib to an encrypted lib.
Allow to change an encrypted lib to a public lib.
Allow to change password of an encrypted lib.
Allow to deploy office files to encrypted exe files.

Including EasyOfficeLib's features:

List all office files of the current lib in a task pane.
Allow to add, modify, and delete folders.
Allow to add, modify, and delete files.
Double click the file node to open the office file.
The lib task pane will always stay on the left.
Allow to switch to display another lib.
Allow to add, modify, and delete libs.