Side by side
gpg4o vs Gpg4win
Both stand on email encryption software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Windows
gpg4o combines Outlook-based OpenPGP email protection with key-management and enterprise features. Keep in mind that encryption does not cover the subject line or recipient list, and Mac OS is unsupported.
Visit gpg4o Free plan Windows
Choose Gpg4win if you use Windows and want file or email encryption with Outlook integration and administrator access controls. Its documentation, source code and community provide additional project resources. Look elsewhere if you need a platform other than Windows.
Visit Gpg4winThe facts
| gpg4o | Gpg4win | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Windows | Windows |
| Lowest paid plan | See the plans | Free or on request |
| Plans published | 4 | 1 |
| Maker | gpg4o | Not published |
| Website | bayoosoft.com | gpg4win.org |
| On email encryption software | #6 of 31 | #10 of 31 |
gpg4o: what it does well
- Encrypts, decrypts, signs, and checks messages.
- Supports three listed encrypted mail formats.
- Key management includes synchronization and Web of Trust checks.
- Free version has no time limit.
- License can be used on several computers and profiles.
What to know first
- Subject lines and recipient lists remain unencrypted.
- Mac OS is marked unsupported.
- Central key management requires Enterprise KeyServer.
- Paid plan is listed at €99.95 a month.
Gpg4win: what it does well
- Encrypts files and email on Windows.
- Supports attachment delivery and recipient identity verification.
- Integrates with Outlook and lists administrator access controls.
- Download area includes an integrity check.
- Offers a Compendium, support documentation, wiki and community.
What to know first
- Available for Windows.
- The listed plan is free, with no paid pricing stated.
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