StageOne is a plug-in designed to manipulate stereo imaging, by extracting a signal that corresponds to what we hear as the 'phantom centre' and processing this independently of the rest.
Interstellar Radio is "a faulty transmission line", whose wholly analogue design converts incoming audio to a high frequency pulse train then back again.
Looking for pre-mixer sweetening? Finaliser R‑EQ offers three-band parametic EQ, a two-way aural enhancer that works on the top and bottom end of the audio, and basic DSP effects like reverb and delay.
Billed as a comprehensive graphic equaliser for the cost of a few beers, Gramotech's Babylon might better be described as a very flexible multiband EQ.