AF_Filter 1.0 for Mac was available as a free download on our application library. This free software for Mac OS X was originally produced by lostsidedead. The application lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
AF_Filter is a GUI for some custom image filters. You can select a image, and set the filter index to any frame. Now contains Red/Green/Blue sliders for further precision. A Set current filtered image as source option so you can chain together filters. Also copy/paste so you can easily transfer the image between applications.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be similar to AF_Filter.