SnapRAID!

FreeNAS is a free NAS (Network-Attached Storage) server, supporting: CIFS (samba), FTP, NFS, AFP, RSYNC, iSCSI protocols, S.M.A.R.T., local user authentication, Software RAID (0,1,5) with a Full WEB configuration interface. FreeNAS takes less than 32MB once installed on Compact Flash, hard drive or USB key.The minimal FreeBSD distribution, Web interface, PHP scripts and documentation are based on M0n0wall.

StableBit DrivePool is a state of the art pooling solution.- Allows you to create a large pool with any number and any sized disks.- Files are stored on normal NTFS volumes, so you can recover your data on any system.- Drives are added in seconds, without having to format or forcing the disk to be used solely for the Pool.- Integration with StableBit Scanner to protect your data by moving it out of a failing disk.- Designed to be extremely light on system resources, so you won't even notice it's running.- Read Striping to boost performance from your pool.- Optional prioritization of network traffic (Network IO Boost) to make sure your network access is never slowed down.- Duplication is done in real time, so you'll never have issues with modifying files.- Complex and easy to use balancing system allows you extensive control over how files are placed on your disks.- Fully featured 30 day trial period.- Real time performance information (read, write, and read-striping). »

Unify & organize your data. Protect & recover from disk failures! Whether you are choosing Transparent RAID™ or RAID over File System, FlexRAID products allow you to transform a common PC with an existing operating system into a protected Network Attached Storage (NAS) appliance or a Hybrid Storage System (HSS), which is accessed both locally and remotely. All FlexRAID products are non-intrusive in that you can uninstall the software at any time and regain complete control of your disks and data without ever needing to do a data migration. »

Drive Bender for Windows is state of the art, single point storage pool technology for all versions of Microsoft Windows (read more).

Are you one of many home users who store a lot of personal data, accumulated over the years, and want to store those in a safe and cool way? Then consider the advantages of using ZFSguru:

Rockstor is a free and open source NAS (Network Attached Storage) operating system. It’s a software solution and can be installed on commodity hardware or a hypervisor satisfying minimum system requirements.

Enterprise Storage OS® is a quasi Linux distribution based on the excellent SCST project; its purpose is to provide SCSI targets via a compatible SAN (Fibre Channel, InfiniBand, iSCSI, FCoE). In a nutshell, ESOS® can easily turn a server with the appropriate hardware into a disk array that sits on your enterprise Storage Area Network (SAN) providing sharable block-level storage volumes. Typical uses for an ESOS® "storage server" include VMFS datastores on VMware ESX/ESXi, Windows NTFS volumes, Linux disks, etc. »