The Security Checklist - The Practical Security Checklist for Web Developers
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
iCompaas - Cloud infrastructure Compliance, CyberSecurity and Cost Saving as-a-Service
Kleopatra - Kleopatra is a certificate manager and GUI for GnuPG.
Gold Fig - Version control for settings pages
PGP Tool - PGPTool allows you to encrypt and decrypt files. It's free and easy to use.