- https://github.com/rcook/rgpg - interfaces with GPG to avoid interacting with default keyring
- https://github.com/skeeto/enchive - simple CLI encyption tool (see also https://nullprogram.com/blog/2017/03/12/)
- http://manpages.ubuntu.com/manpages/cosmic/man1/gpgme-tool.1.html - a socket API for gpgme
- https://launchpad.net/ubuntu/bionic/amd64/python-gpg - a python API for gpgme (the official one!)
- https://github.com/ueno/ruby-gpgme - a ruby API for gpgme
- https://https.www.google.com.tedunangst.com/flak/post/reop - an encryption tool
- https://superuser.com/questions/399938/how-to-create-additional-gpg-keyring
- https://unix.stackexchange.com/questions/104941/is-there-a-way-to-embed-a-gpg-public-key-in-a-script-without-adding-it-to-the-ke
- https://www.mailpile.is/blog/2015-02-26_Revisiting_the_GnuPG_discussion.html
- https://unix.stackexchange.com/a/269841/305787 - about gpgme-tool
- https://wiki.python.org/moin/GnuPrivacyGuard
- https://www.saltycrane.com/blog/2011/10/python-gnupg-gpg-example/
- https://www.digitalocean.com/community/tutorials/how-to-verify-code-and-encrypt-data-with-python-gnupg-and-python-3
- https://www.ynonperek.com/2017/12/11/how-to-encrypt-large-files-with-python-and-pynacl/