TrueNAS, OpenMediaVault, Unraid, Western Digital My Cloud, Amahi Home Server, ReadyNAS, Openfiler, XigmaNAS, SnapRAID, ZFSguru, ESOS, FlexRaid T-Raid, FuguHub, napp-it, Open-E Data Storage Software SOHO, Easy File Sharing Web Server, BadBlue, Gigatribe, EON ZFS Storage, Weezo are some alternatives to Rockstor.