As with all technical things in the world, people and not machines created them are responsible to keep them running. Software and thus GnuPG is not different. Although software is build using a lot of other software and thus the work of many thousand people, you may be interested to see who is working on GnuPG. Here is a list of some of them:

Core components maintainer

Werner started GnuPG in 1997 and still puts most of his working time into the development and maintenance of GnuPG. He has 29 years experience in commercial software development on systems ranging from CP/M systems to mainframes, languages from assembler to Smalltalk and applications from drivers to financial analysis systems. Werner is a long time free software supporter and co-founder of the FSFE. With the support of his brother he founded g10^code GmbH in 2001 to make GnuPG development his profession. Werner is full time employed by g10^code.

Master of the classic branch

David approached the GnuPG Project in 2002 after the relaxing of the US crypto regulation allowed the participation of US based hackers on international crypto projects. One of his first achievements was a much improved Web-of-Trust implementation. Today he mainly takes responsibility for the keyserver access and the classic GnuPG 1.x branch.

Hacker

Marcus is part of the free software community since 1997, when he joined the Debian project. Probably best known for his past work on GNU/Hurd, he also has a diploma degree in mathematics, and is full time employed by g10^code to work on the GnuPG and related software from 2001 to 2012 and again since 2017.

Smartcards and Libgcrypt

Niibe is a long time free software hacker who joined the GnuPG project in 2011 and soon took over the development of the smartcard related code. He is also the person behind the Gnuk Token and the MEP game. Niibe’s work on GnuPG is financially supported by g10^code.

Optimization

Jussi joined the GnuPG project in 2012 and worked since then on assembler optimized code for cryptographic algorithms in Libgcrypt.

Core components hacker

Neal started to work on GnuPG in 2015 to support maintenance and development in all areas. He is full time employed by g10^code.

Enigmail hacker

Kai is working on the Enigmail project since 2015. He is part time employed by g10^code.

Core components hacker

Justus started to work on GnuPG in 2015 to support maintenance and development in all areas. He is full time employed by g10^code.