StableBit DrivePool - State of the art, file based drive pooling software.
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
btrfs - Btrfs is a modern copy on write (CoW) filesystem for Linux aimed at implementing advanced features...
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
Greyhole - Greyhole is an application that uses Samba to create a storage pool of all your available hard drives, and allows you to create redundant copies of the files you store, in order to prevent data loss when part of your hardware fails.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...