Marvel GEQ is a linear-phase 16-band graphic equalizer AU and VST plugin with multi-channel operation support (supporting up to 8 input/output channels, audio host application-dependent) for professional music production applications. Marvel GEQ offers extensive internal channel routing capabilities, and supports mid/side channel processing.
MSED is a professional audio encoder-decoder plug-in for mid-side processing which is able to encode (split) the incoming stereo signal into two components: mid-side pair, and vice versa: decode mid-side signal pair into stereo signal.
OldSkoolVerb is a freeware algorithmic reverberation AU and VST plug-in for professional music production applications. This plug-in implements a kind of “classic” stereo reverb algorithm which is technically simple yet optimal. It also produces a very clear spatial image that blends well with the mix.
The plug-ins are available to download for Windows and Mac (VST/AU).
More information: Voxengo