Dartmouth College PKI Lab - Project to develop inter-institutional applications. Includes related links, research information and results, and contact information.
NIST PKI Program - An initiative to coordinate industry and technical groups developing PKI technology to foster interoperability of PKI products and projects. (National Institute of standards and Technology)
The Open Source PKI Book - An attempt to register the available open source concerning PKI, and useful technical background info.
The PKI Page - This page contains links to various sites and documents related to Public Key Infrastructure (PKI) material, especially links certificate authorities (CAs). (Stefan Kelm)