PGP stands for ?Pretty Good Privacy?. It?s an excellent public-key encryption package that you can use to secure communications from a client to server.
It is available also as an open source version and is owned by PGP Corporation. They are a recognized worldwide leader in secure messaging and data storage, that allow and ensure confidential customer and individual information remains secure.
Over the last 6 years, PGP has built a global reputation for open, trusted, and highly reliable security products. PGP has thousands of corporate and millions of individual users worldwide, including many of the world’s largest and most security sensitive enterprises, government agencies, individuals, and cipher experts. ::: http://www.pgp.com
A listing of their products can be found here:
http://www.pgp.com/display.php?pageID=2