The latest version of OS X – El Capitan – is just days away now, and the excitement is building. But before you plunge in and install it, what happens if something goes horribly wrong with the new install? You might be able to roll things back with Time Machine, but Belight Software has an alternative.

Belight wants you to start using its three-pronged backup solution Get Backup Pro instead – and to tempt you into switching, it’s offering a free licence for the Pro version, worth $19.95 – but hurry, you’ve only got around 48 hours left to grab it!

Belight Get Backup exists in both freeware and Pro form, with Pro users getting some major upgrades on the core functionality offered in the free version. Both versions of Get Backup offers three different kinds of backup for your Mac: traditional files and folders, a full-blown cloning solution and the option of keeping two folders in sync.

Get a more flexible backup solution for your Mac – for free (until September 30th)!

For those about to upgrade to El Capitan, the clone function is likely to be of most use. The idea is that you press a spare hard drive into service, cloning your main hard drive onto that. Any existing data on the destination drive is wiped (this isn’t drive imaging, after all), but should something bad happen, you can simply boot from the cloned drive and be up and running again in minutes.

Get Backup Pro also allows you to take backups of individual files and folders, allowing you to create multiple backup jobs covering different parts of your system. A number of templates – including iTunes, iPhoto and Mail – help get key files and settings quickly added to your backup too.

The folder sync tool allows you to keep two folders in sync – and if you take advantage of Belight’s free Pro code offer, you’ll get two-way sync. Other reasons to grab that free code include support for encrypted backups, the ability to perform incremental backups to save drive space and an option allowing you to restore selected files and folders from your backup.

How do you take advantage of this free offer? Head over to this special Get Backup Pro landing page before 23.59PST on September 30^th, then click the link to register your email address and receive your free code by email. Once you’ve installed Get Backup, just open the Get Backup Pro menu and choose Pro Registration… to enter your name and licence code to unlock the full version.

Even if you miss out on the Pro code offer, Belight Get Backup 2.6.1 is still available as a function-limited freeware download for Macs running OS X 10.6 or later.