GNU Privacy Guard

GNU Privacy Guard (GnuPG or GPG) is a free-software replacement for Symantec's PGP cryptographic software suite. The software is compliant with RFC 4880, the IETF standards-track specification of OpenPGP. Modern versions of PGP are interoperable with GnuPG and other OpenPGP-compliant systems. GnuPG is however expected to break compliance with the upcoming revision of OpenPGP and thus with other implementations that will continue to comply.

Original author(s)Werner Koch
Developer(s)GNU Project
Initial release7 September 1999 (1999-09-07)
Stable release(s)
Stable2.4.4  / 25 January 2024
LTS2.2.42  / 28 November 2023
Legacy1.4.23  / 11 June 2018
Repositorydev.gnupg.org/source/gnupg/
Written inC
Operating systemMicrosoft Windows, macOS, RISC OS, Android, Linux
TypeOpenPGP
License2007: GPL-3.0-or-later
1997: GPL-2.0-or-later
Websitegnupg.org

GnuPG is part of the GNU Project and received major funding from the German government in 1999.

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