On dpreview.com, I read about Nik Sharpener Pro software. A version 3.0 of Sharpener Pro is available on the official developer homepage so you can download and test it for 15 days.
The special highlight of it is that it not only as a simple plug-in for Photoshop to sharpen image, but also it offers a possibility to RAW sharpering. It is possible to select areas that are should be sharpened so that only certain image areas will be sharpened. This is very important because it can prevent artifacts, which are often could be found on images, made in low light conditions.
To use RAW sharpening effectively, you should, disable in Photoshop the integrated RAW converter. By default it is on.
There is also a very important feature integrated in this version of the software. It is a possibility of sharpering of certain colors independently of each other. This helps in some situations enormous. For example, if you have to develop a macro image of a flower.
