Drag'nBack
Flexible drag-and-drop backup utility

Ease Seller
Simple, easy backup software

Free Backup
Timed backup for folders and disks

FoldersSynchronizer
synchronize and back up folders and disks, incrementally replacing old files with new

NetBackup
data backup utility for small Macintosh networks, needs HyperCard Player

Real Backup
Backs up specified files for simple file revision control

Redux
Flexible backup tool which saves and can restore from multiple backup sessions

Sync X
Backup and synchronization program with powerful file selection criteria