SnapRAID is highly recommended for home users, small businesses, or enthusiasts who manage media libraries or backups. It is ideal for those who need a cost-effective solution that offers data security and flexibility without the complexities of traditional RAID configurations. Users who favor efficient storage utilization and who prefer managing their data storage with a hands-on approach will find SnapRAID to be an excellent tool for their needs.
TrueNAS Core - TrueNAS Core (formerly FreeNAS) is a storage operating system strong and robust enough to meet the needs of enterprise level businesses.
XigmaNAS - File Sharing, OS & Utilities, and Security & Privacy
OpenMediaVault - OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
PetaSAN - PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.
Unraid - Simplicity. Flexibility. Scalability. Modularity. Unraid empowers you to build the system you’ve always wanted using your preferred hardware, software, and operating systems.
Rockstor - Rockstor is a free and open source NAS (Network Attached Storage) operating system.