Voxengo Voxformer
I'm using this on Linux (kxStudio 16.04 64bit) via the WinVST adaptor. Finally a way to run VSTs in a very stable way. Well, not all VSTs, but all from Voxengo that I use so far.
The Voxformer turned out to be my bread & butter workhorse. On pretty much all vocals I mix, I use the Voxformer compressor and de-esser. Since I do mostly live recordings, I got plenty of not-so-optimal SM58 and alike mics, which may also benefit from the Presence function in Voxformer.
I also use it on bass and drums sometimes, depending on my needs. Overall, I must say now that I found a way to run Voxengo plugins on Linux reliably, the Voxformer is the best vocal channel you can get for the price.
i came across voxengo plugins a while ago, and gave them a try. i have to say, these are some great plugins. i am currently using the free Stereo Touch and free SPAN plugins as well as the (very reasonably priced) PHA-979 plugin, i am interested in the Voxformer,Redunoise, and GlissEQ plugins.
i have talked with Aleksey Vaneev a few times,and he is a really nice guy. he knows what he is doing, and is very helpful.
+1 for Voxengo's amazing VST Plugins!