(There's no video for KPT Convolver 1.0 yet. Please contribute to MR and add a video now!)
KPT Convolver is a plug-in extension to Adobe Photoshop that takes advantage of the custom convolution kernel. With its powerful filter-generating engine, KPT Convolver gives the user instant access to blurs, sharpens, embosses, tinting, color, contrast, unsharp masking and Gaussian blurring all from one innovative, 24-bit graphic interface.
kpt_convolver.sit (5.87 MiB / 6.16 MB)
System 6.x - Mac OS 9 / compressed w/ Stuffit
Emulating this? It should run fine under: Basilisk II