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What is the best PGP program, commercial products included?

Must have:

  1. Easy and streamlined email integration for common clients.

  2. Easy to encrypt single files with simple GUI.

  3. Some kind of trusted centralized key managing service for common PGP needs (tracking public keys, revoking keys, etc.)

  4. Must be strongly GUI based. Command line features wont be used.

I am aware of the command line clients, but I need something with much better integration in a GUI enviornment. Consider price no object.

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closed as primarily opinion-based by Nifle, DavidPostill, fixer1234, Kevin Panko, mdpc Jan 30 '15 at 5:32

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question.

for which operating system? – John T Nov 25 '09 at 18:01
"What is the best ..." should be Community Wiki. – Molly7244 Nov 25 '09 at 18:30
Windows operating system support is most critical. – user19255 Nov 25 '09 at 19:16

See Gpg4win :

Gpg4win is an installer package for Windows (2000/XP/2003/Vista) with computer programs and handbooks for email and file encryption. Both relevant cryptography standards are supported, OpenPGP and S/MIME. Gpg4win and the software included with Gpg4win are Free Software (among other things free of charge for all commercial and non-commercial purposes).

You can choose all or some of the following modules during installation:

GnuPG: The core; this is the actual encryption tool. Kleopatra: A certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs.
GPA: Another certificate manager for OpenPGP and X.509 (S/MIME).
GpgOL: A plugin for Microsoft Outlook 2003 and 2007 (email encryption).
GpgEX: A plugin for Microsoft Explorer (file encryption).
Claws Mail: A complete email program including the plugin for GnuPG.
Gpg4win Compendium: The new (German!) documentation about Gpg4win2 (translation already scheduled).
Gpg4win for Novices: The old English handbook about Gpg4win1 (for newbies).


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