Not a free VST, but since I think it is a very good and powerful tool, I just wanted to drop the hint, that Iris 2 is currently for sale droped from 149 to 49 $ at Izotope (or 44 Euro at Best Service, if you prefer).
https://www.izotope.com/en/products/cre ... /iris.html
https://www.bestservice.de/iris_2.html
Iris 2 Sale
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