Comparison with Time Machine:

Back-In-Time can restore old versions of your data, just like Time Machine. But it offers a lot more features and flexibility:

Time Machine can't tell you how many versions of a given document are backed up.
Back-In-Time can, and shows you the date and size of each one. You can preview any version with QuickLook.

Time Machine can't quickly tell you when a file or folder was deleted.
The only way to find out is to search the entire backup disk. Back-In-Time shows you deleted items, as well as the date they were last backed up.

Time Machine can't show you the history of a document.
Back-In-Time clearly shows on its timeline when each document was created, and when it changed.

Time Machine does not let you easily know the space really occupied on the backup disk by all the versions of a file or a folder.
Back-In-Time does. It calculates for you the space on the disk used by the different versions of files, applications and files.

Time Machine doesn't support drag and drop.
With Back-In-Time, you can drag any backed up version and drop it anywhere on your Mac to restore it. Or drop it on an application to open it.

Time Machine can't access old backup data on a different disk (for example, if you have replaced your Time Machine disk).
Time Machine limits you to a single active backup disk. Back-In-Time scans any mounted disk containing Time Machine data, and lets you restore the data to any location.

Time Machine can not display by combining data from multiple disks (if you have changed your disk, or replaced your backup disk.
Back-In-Time does. It can combine the display of multiple disks, Macs and backup disks. It gives you the changing in the contents of your internal drive and the one before in your Mac.

Time Machine can't access data backed up by another Mac.
Back-In-Time can. It will analyze any mounted disk and let you access the backed up data.

Time Machine doesn't allow multiple file browser windows.
Back-In-Time lets you open as many browsers as you need.

Back-In-Time doesn't create Time Machine backups.
You'll still need Time Machine to actually create the backup files. But for total flexibility in searching and restoring your data, you need Back-In-Time!

Comparison Chart

	Time Machine	Back-In-Time
Create backup files	YES	NO
Restore data to its original location	YES	YES
Restore an entire disk	YES	YES
Show number of backed-up versions available	NO	YES
Show version history of each item	NO	YES
Show deleted items (date deleted and date of last backup)	NO	YES
Drag and drop restore	NO	YES
Access older backups on other disks	NO	YES
Access backups from other Macs	NO	YES
Use multiple backup browser windows	NO	YES
Calculate the space occupied by the backups	NO	YES
Combine multiple disks to display them as a single one	NO	YES