The 2.0 version of Dfine for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This software for Mac OS X is a product of Nik Software. The application lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
Virtually, all digital cameras inherently create unwanted imperfections known as noise. The amount or type of noise in an image typically depends on the quality and type of imaging sensor with which it was created. Contrast (Luminance) Noise and Color (Chrominance) Noise can be individually present in an image or might be seen in the same image.
You may want to check out more Mac applications, such as QuickShow OSX, Stone Studio or PhotoDesireeExpress, which might be similar to Dfine.
Viewers & Editors