I don’t know what the technical term would be, but I want to add an effect to an audio file to recreate the slowdown/speed-up of a vinyl record player. As if you touch the turntable and stop it quickly with your finger, and then let go so it speeds up again.
I haven’t tried it and it doesn’t officially support Audacity but somebody reported here on the forum that it works. (You’ll need the 32-bit version even if you have 64-bit Windows because Audacity is 32-bits.)
Because it’s Izotope’s only free product… I also suspect that it’s sort-of intended as a sarcastic poke at people who think analog is superior to digital. But, it is a “real product” and I’m sure it works and can be useful.