Plugins VST que no se si están por el hilo de plugins gratuitos:
SPAZIAL
"Spazial" is a powerfull audio VST designed for create wide stereo effect and is able to encode and divide the incoming stereo signal into M / S signals but also for decode M / S signals into stereo signal
"Spazial" uses different ways to processing the incoming signal.
There are 5 modes of using it : "internal", "send mid", "send side", "spazial" and "decoder mode".
"Spazial" allows the processing of the signals encoded by five potentiometers on the panel or sends the encoded pure signals directly to the output via the functions "enc mid" and enc-side. "
The panel also has a useful high-pass filter and a special vibrato control.
Spazial is free donationware and available in VST format for Windows.
SPAZIAL EQ M-S
EQ 01 M/S is the first component on the "SPAZIAL series"
It is double equalizer for mid/side signal.
It is able to encode the incoming stereo signal into M / S signal, then equalizes M/S signal and converts
into stereo signal.
It can works also in "encoder" mode.
Can be put in series with "SPAZIAL" or any decoder M / S, but is also designed to work alone.
EQ 01 M / S is a component of the line "SPAZIAL".
Disponibles aquí:
http://synthblitz.altervista.org/spazial-.html
y
Specan32 (Spectrum Analyser)
rms+ (RMS+ Peak Loudness Monitor project)
Disponibles aquí:
http://www.pitonelab.ru/software/ 
/ Se puede ajustar el envio de reverb independientemente para cada sonido, pero en este caso yo lo he puesto global, tambien se puede hacer lo mismo con el pitch,lfo etc, pero vamos creo que el maize este necesita una buena actualizacion. 
