PetaSAN - PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.
Dell EMC UnityVSA - dell-emc-unityvsa-overview-deployment
XigmaNAS - File Sharing, OS & Utilities, and Security & Privacy
SvSAN - SvSAN is a virtual SAN for Hypervisors.
ReadyNAS - ReadyNAS by NETGEAR.
DataCore SANsymphony - SANsymphony is a Software-Defined Storage powered by DataCore Parallel I/O technology for virtualization solution.