19.3. What PGP / GPG encryption software is available for Windows?

(Answered by Daryl Houston, Jonathan Clark, Aaron Hazelton, Mike Heins and Michael Goldfarb)

* PGP for various platforms:

http://www.pgpi.org/products/pgp/versions/freeware/

* WinPT (Windows Privacy Tray)

http://www.winpt.org
A universal encrypt/decrypt program that operates generally via the clipboard so would be compatable with most programs, but there is also an Outlook Express plugin. It comes with GPG (below).

* GPG Windows version

http://www.gnupg.org/download.html

* MIT distribution of PGP

http://web.mit.edu/network/pgp.html
Only for US and Canada for non-commercial use. There may also be an international version without those restrictions.