Here is the blurb from Oleano website.
Oloneo® PhotoEngine™ is the only Raw processing and HDR software offering digital photographers full control over light and exposure in real-time, as if they were still behind the lens.
At the core of Oloneo PhotoEngine is a fully real-time, 32-bit floating-point per channel (96-bit per pixel), High Dynamic Range (HDR), ultra-wide gamut, full resolution and non-destructive image-editing engine. Oloneo's color model handles a range of colors that largely surpasses what printers or screens are capable of displaying today. Combined with the suppression of any color shifting and clipping, it guarantees photographers against any loss of image data during the HDR process.
With a simple, intuitive and responsive user interface, all image controls work in full real-time at a rate of 1/20 second or less on a general-purpose desktop or laptop computer.
And here is a comparison review of the Oleano, Photomatix, and the Nik HDR processing tools from Earthboundlight.com
