MacDaddy has announced Mac Backup Guru 4.0 for OS X, an update to its utility and which has three main features.
It provides a contextual menu to copy and paste a bootable volume in the Finder It provides incremental Snapshots in OS X. And it provides straightforward clone/sync functionality.
Incremental Snapshots use only a small fraction of the disk space to store daily versioned backups which can be accessed via the Finder and appear to be standard copies. This is done by employing hardlinks to the original files for unaltered files. Mac Backup Guru also offers the more traditional clone and sync functionality, with built in Contextual Menu Items in the Finder to make it easier access its capabilities and streamline the user interface.
Mac Backup Guru requires Mac OS X 10.7 or later. It costs US$39 and is available here (http://macdaddy.io/mac-backup-software).