According to the author, this is the production release of WinPGP 5.0
32bit shell for PGP.
New with this release:
WinPGP now supports email via the MS-Exchange Client
The program now does both multifile Encryption and Decryption
The Clipboard Editor is displayed as a Window and has wordwrap
WinPGP now supports multiple recipient selection
Improvements have been made to the Key Management section
A new registration security system is implemented
According to the author, ProPGP was designed so that someone knowing no PGP commands can use PGP with ease. Virtually all options in PGP 2.6.2 are supported, including nearly every key operation (e.g., adding public keys to your keyring, viewing fingerprints, etc.). You can even encrypt data from the clipboard! ProPGP also lets you easily view text files before or after encrypting/decrypting.
The source if needed if you want to
build your own pgp-dll or you want to use the dll within your own programs.
It contains full PGP sources.
The binary if needed if you only want to use the pgp-dll and not build it yourself. It contains the binary of 2.6.3i,
The update contains only the pgp-dll and you must already have PGP 2.6.3i already installed
Full details are available at http://www.gwdg.de/~jpilgri/jvppgp.