iTrustGPG 0.9 for Mac was available as a free download on our application library. This free software for Mac OS X was originally designed by binaervarianz.
From the developer:
The GPG/PGP web of trust is a very powerful, however complex institution.
iTrustGPG tries to change this situation, by making you able to visualize trust relationsips fairly easy.
Requires keys to be in internal database.