Free Software

RAID and File split links

RAID

RAIF: Redundant Array of Independent Filesystems

GNU File splitters

General purpose

gfilesplit
Unix GNOME
kjsplit
Unix KDE
PeaZip
Windows

gsecraif

Audio splitters

audio_combine (and audio_split)
Posix
tape2mp3
?
wavbreaker
Linux Unix-like

Freeware File splitters

HJ-Split
Mulitple platforms
GSplit
Windows