Very popular deal in the past. Use Chrome or language add-on to translate the German page. You'll receive an e-mail with registration code and download links for Mac & Windows versions of DxO OpticsPro 11 Essential. Enjoy :)
FREE: DxO Optics PRO 11 Essential Edition for PC & Mac
80
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Note: This is software for editing photos in formats used by DSLR cameras (and some other devices). It's like Adobe Lightroom and normally costs about $150.
These kinds of tools are more complicated/powerful than most people need, but if you like to tweak your photographs then it's very useful to learn.