The SaaS CTO Security Checklist - The security checklist all CTOs should follow
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
Marshal - Quickly scan your cloud for exposed sensitive information.
Autocrypt - Convenient End-to-End Encryption for E-Mail
Startup Security Program by Templarbit - Security practices & tools required to close large deals
CrococryptFile - Strong file encryption tool