zfec, Tahoe-LAFS (Score 1)

zfec is much, much faster than par2: http://allmydata.org/trac/zfec

Tahoe-LAFS uses zfec, encryption, integrity checking based on SHA-256, digital signatures based on RSA, and peer-to-peer networking to take a bunch of hard disks and make them into a single virtual hard disk which is extremely robust: http://allmydata.org/trac/tahoe