Neutrino

It no longer exists.

When it was released, I did try it out, but the effect was so subtle, you kept wanting to push 100% as you could not tell if it was doing anything.

No wonder it's gone.

iZotope Neutrino is a very straightforward plugin with only two knobs and four processing selections depending on the track you're running through it. I downloaded this plugin a few months ago and am very happy with how it adds color and sparkle to vocals, thick and grungy attitude to bass tracks, fullness to drums, and largeness to guitars and other instruments. I find that I use it occasionally on my vocal tracks, as it adds a subtle but pleasant edge to help them stand out in my mixes when nothing else seems to do the trick. It behaves well with other instruments, though being over-generous with the knobs can cause harm to your tracks due to the personally unpleasant coloration it adds when pushed too hard.

OVERALL: 7.0 out of 10