Delay Dots' Windows-first suite of plugins, the Sound designers | Spectral Suite, has made it to Mac OS X VST, with an AU version in progress. There's a nice line-up of effects here for sound creation:

  • Spectral Morph, with convolution and vocoder modes
  • Bass exciter (available in an optional pro version)
  • Spectral pitch shifter
  • Physical-modeled tube distortion

Demos are available, but if you're dizzy with plugins already, watch for the CDM review soon.

Compatibility: Mac VST (AU soon), PC VST (PC users, check out the freeware page, too!)
Cost:  $99 Mac, $75 PC; lifetime upgrades, available now