pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
DeliverySlip - DeliverySlip helps simplify, secure, and expedite the burdensome elements of online collaboration...
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
Pignus Encryption - Pignus Encryption is an encryption platform that allows users to encrypt their messages and documents.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
Toolsley PGPigeon - Simple but powerful OpenPGP-compatible message encryption webapp.