AmphiSoft Photo Sharpen is a Photoshop, Paintshop Pro etc. compatible plug-in that offers advanced image sharpening without creating visible halos. It incorporates edge sharpening and general sharpening algorithms with a choice of aggressive or gentle software and customizable radius and intensity settings. AmphiSoft Photo Sharpen works with 8 bit and 16 bit RGB, Greyscale and Lab images. The demo version allows you to preview the sharpening results but you cannot apply them to the image.

The license of this software is Free Trial Software, the price is $29.00, you can free download and get a free trial.