
Time Machine
Time Machine is the breakthrough automatic backup that’s built right into Mac OS X. It keeps an up-to-date copy of everything on your Mac — digital photos, music, movies, TV shows, and documents.
rdiff-backup backs up one directory to another, possibly over a network.
rdiffbackup backs up one directory to another, possibly over a network. the target directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that target directory, so you can still recover files lost some time ago. the idea is to combine the best features of a mirror and an incremental backup. rdiffbackup also preserves subdirectories, hard links, dev files, permissions, uid/gid ownership, modification times, extended attributes, acls, and resource forks. also, rdiffbackup can operate in a bandwidth efficient manner over a pipe, like rsync. thus you can use rdiffbackup and ssh to securely back a hard drive up to a remote location, and only the differences will be transmitted. finally, rdiffbackup is easy to use and settings have sensical defaults.
Productivity Developer Tools Utilities Security Backup and Sync
backup-and-restore Discontinued