| App | Installs | Publisher | Publisher Email | Publisher Social | Publisher Website |
| 7M | Italiaonline S.p.A. | *****@italiaonline.it |    | http://www.libero.it/ | |
| 5M | K-9 Dog Walkers | *****@gmail.com | - | https://k9mail.app/ | |
| 4M | io.mt | *****@gmail.com |  | http://io.mt/ | |
| 4M | Comera Technology LLC | *****@mycomera.com | | https://mycomera.com/ | |
| 2M | CitizenChat inc | *****@healthbyorganics.com | - | http://www.healthbyorganics.com/ | |
| 1M | Sir Vendor | *****@gmail.com | - | https://sirvendor.net/ | |
| 1M | Super Communication Studio | *****@outlook.com | - | https://adhome.emalauncher.com/email-app/ | |
| 918K | Tiscali Italia SpA | *****@it.tiscali.com | | https://mail.tiscali.it/ | |
| 916K | Wellness Group | *****@n-gage.com | | http://www.n-gage.com/ | |
| 816K | Italiaonline S.p.A. | *****@italiaonline.it | | http://www.libero.it/ |
Full list contains 278 apps using OpenPGP Api in the U.S, of which 192 are currently active and 68 have been updated over the past year, with publisher contacts included.
List updated on 4th May 2024
The OpenPGP Api SDK is a Security SDK provided by OpenKeychain Team. By integrated this SDK, apps have the capabilities of Data Encryption.
A breakdown of countries and app categories used by OpenPGP Api apps.
Most popular OpenPGP Api alternatives in 2024.
| SDK | Apps Integrated | Provider |
| 31K | Amazon Web Services, Inc. | |
| 4K | Square, Inc. | |
| 2 | Packetizer, Inc. |
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