Kosmo and Pulsars Secure Web Solutions: Kosmo and Pulsar's Secure Web Solutions is a competence centre with the intention to create license free and secure web solutions based on unix systems (FreeBSD,OpenBSD,NetBSD).
NIST Cerberus, An IPsec Reference Implementation for Linux: News, descriptions and contact information
Psionic Software Systems: Computer security information, intrustion detection, programs, and The Abacus Project.