The following are projects that implement the OpenPGP protocol which have agreed (to some degree) to be a part of this working group and work towards improving the usability across the PGP eco-system.
- caff (part of the signing-party package)
- Gnome Keysign
This is by no means an exclusive list. If you work on or know of a relevant project and would like it included, please file and issue on our github repo.