Ciphermail email encryption gateway (S/MIME, OpenPGP, PDF encryption)
...The built-in Data Leak Prevention (DLP) module can be used to prevent certain information to leave the organization via email.
Ciphermail can be installed on most Linux and Unix based systems. Installation packages are available for Ubuntu, Debian, Red Hat/CentOS and OpenSUSE. A ready to run virtual appliance for VMware and Hyper-V is available.
Ano (Anonymous Network Overlay) is a decentralized IP router based on relaying principle. In Ano all IP traffic is anonymized, including TCP, UDP, ICMP and DNS protocols. Each node acts as a relay and NAT for external traffic.
Secure File Transfer for Windows with Cerberus by Redwood
Protect and share files over FTP/S, SFTP, HTTPS and SCP with the #1 rated Windows file transfer server.
Cerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.