Membership in the OpenPGP Alliance is open to any company, organization, or individual interested in developing products or offering services based on the OpenPGP standard.
On the left of the page you will see a list of companies and organizations that are members of the OpenPGP Alliance. These organizations have developed or are now developing software products that implement the OpenPGP standard, or have committed to OpenPGP in their product roadmaps. They are all contributing to the OpenPGP protocol's decade-long reign as pretty much the only way that the world encrypts email, as well as expanding OpenPGP's ready-made PKI to other applications.
Click on the links to see an overview of what each company is doing in this area. They are listed in alphabetical order.