DeliverySlip - DeliverySlip helps simplify, secure, and expedite the burdensome elements of online collaboration...
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
Pignus Encryption - Pignus Encryption is an encryption platform that allows users to encrypt their messages and documents.
ClearOS - A very good alternative for Windows Server, for free
Lockbin - Lockbin is a web application for sending private email messages and files.
OpenMediaVault - OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.