RAID Reconstructor (commercial):http://www.runtime.org/raid.htm
DMDE - DM Disk Editor and Data Recovery Software (freeware):http://softdm.com/
"DMDE has a number of freeware features (Free Edition) such as disk editing, simple partition management (e.g. easy partition undelete), RAID constructing, disk imaging, single file recovery."
There is also mdadm software RAID (Linux freeware):http://en.wikipedia.org/wiki/Mdadm