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.[4]

Quick facts: Original author(s), Developer(s), Initial rel...
GNU Privacy Guard
Original author(s)Werner Koch
Developer(s)GNU Project
Initial release7 September 1999; 23 years ago (1999-09-07)
Stable release(s)
Stable2.3.7[1]  / 11 July 2022
LTS2.2.40[2]  / 10 October 2022
Legacy1.4.23[3]  / 11 June 2018
Written inC
Operating systemMicrosoft Windows, macOS, RISC OS, Android, Linux
License2007: GPL-3.0-or-later[lower-alpha 1]
1997: GPL-2.0-or-later[lower-alpha 2]

GnuPG is part of the GNU Project and received major funding from the German government in 1999.[5]