StableBit DrivePool - State of the art, file based drive pooling software.
Keycloak - Open Source Identity and Access Management for modern Applications and Services.
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.
OpenLDAP - OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.