SuperDuper is the wildly acclaimed program that makes recovery painless, because it makes creating a fully bootable backup painless. Its incredibly clear, friendly interface is understandable, easy to use, and SuperDuper's built-in scheduler makes it trivial to back up automatically. It's the perfect complement to Time Machine, allowing you to store a bootable backup alongside your Time Machine volume—and it runs beautifully on your Mac!

Features:

Carbon copies. And a whole lot more.
SuperDuper is the most advanced, yet easy to use disk copying program available for OS X. It can, of course, make a full backup, or "clone" — in moments, you can completely duplicate your boot drive to another drive, partition, or image file. In even less time, you can update an existing clone with the latest data: use Smart Update and, minutes later, your backup is completely up to date!

Faster than a speeding bullet – and more accurate!
SuperDuper isn't just the most powerful cloner available: it's incredibly fast, too. Its Smart Update feature evaluates hundreds of thousands of files and directories in just minutes, automatically updating your clone to reflect any changes you've made on the original drive – including custom icons, HFS+ attributes, ownership changes... the works! It can even copy (and Smart Update) Time Machine backup volumes!

Expertise not required.
SuperDuper comes preconfigured, ready to perform all the most common copying and cloning tasks. We've pored over the Apple documentation so you don't have to. Every step of the process carefully follows all Apple recommended policies and procedures.

Whether you're making a full backup to a disk image, using Smart Update to update an existing backup, or making a complex clone to test a software update, the process couldn't be simpler: select the source drive, the destination and the appropriate script. Click Copy Now, and SuperDuper does the rest.

Smart Delete minimizes the possibility of disk full errors while maintaining safety with no speed penalty!

It also includes native Notification Center support, a Finder extension to quickly run copies, and other improvements.

Limitations: Give SuperDuper a workout on your own system. Clone to your heart's content — for free. See what else is possible. When you're convinced that SuperDuper is a terrific solution you can register right from the application and start using its advanced features (scheduling, Smart Update — which saves a lot of time, Sandboxes, scripting and more!) immediately!

Requirements:
OS X 10.10+
Intel

Also available are:
Intel version 2.8 for OS X 10.7
Universal Binary version 2.7.1 for OS X 10.4-6