Soundhack recently released beta Universal Binary versions of the Spectral Shapers collection of plug-ins in both AU and VST formats.

Spectral Shapers consist of:

• +spectralcompand performs smooth timbral filtering. It can be used to tame resonant frequencies or for radical changes of tone. In expansion mode, +spectralcompand becomes a highly tunable broadband noise remover, capable of removing hiss, hum and machine noise, without damaging the original sound.
• +morphfilter holds two filter shapes; these shapes are set by drawing, or by capturing the spectra from the incoming sound. You can morph between these two filters. +morphfilter's depth control can change the strength of filtering, or even invert the filter for an "anti-filtered" sound.
• +binaural places a sound at a specific position around the listener's head. Use it with a reverb to create a virtual environment. When used with its LFO, +binaural can place various beats or parts of a loop in specific repeatable positions.
• +spectralgate is a spectral version of the noise gate/ducker dynamics processor. It combines a noise gate/ducker and a multiband processor to give you a plugin that can be used both as a frequency dependent gate or as a level dependent filter.