This is a photography editing software. Great for people that shoot raw. Has a great database of lenses and cameras to automatically enhance and correct lens distortions.
To get your free license of DxO Optics Pro 8, please enter your email address before January, 31st February, 28th 2015.
I've purchased this version 8 a while back and can highly recommended it! Version 9 is better and has nicer features but it's CPU hungry and will run slower on older computers.
Looks like version 10 is coming soon too. So grabbing this now may qualify you for an upgrade discount price. However as Hippo2s' comment below this free version is not upgradable.
Nice one mate! Cheers :-)