[Need "feather edge" plug-in]

Thanks to everyone ... found it. Now I'm going to have to try it!

[Replacing color with transparency]

I saw that there were a number of older posts on this topic, but they all seem to be out-dated (i.e., point to deleted forum topics, etc.).

I would like to replace the color in a specific area (not throughout the image) with transparency. Suggestions please!

[Need "feather edge" plug-in]

Need "feather edge" plug-in - could someone post the link to the "feather edge" plug-in? (where the edge is transparency)

Sorry - I looked pretty carefully through eight pages of plug-ins, and must have missed it. (Also it didn't turn up in a search).