GVST

GVST’s plug-ins (by Graham Yeadon) are designed by to be simple, light-weight and efficient, although some are more ambitious and some more experimental and include amongst others a Chorus, Compressor, Delay, Gate and several Filter effects.

https://www.gvst.co.uk/index.htm

TBPro Audio

AB_LM is a a gain control which enables level matched and sample accurate A/B comparison of FX chains.
- how to:
http://www.learndigitalaudio.com/ab-level-matching-tutorial-using-free-plug-ins


sTilt is a linear phase filter which tilts the audio spectrum around a given center frequency.

gEQ12 is a 12 band stereo/MS graphic equalizer with accurate spectrum analyzer and minimum/linear phase modes.

dpMeter is a precise digital audio multi channel meter including RMS, EBUR128 and TruePeak measurement.

LA xLimit is an advanced look ahead, wideband linked-stereo limiter including ISP (inter sample peak) detection and oversampling.

etc...

http://www.tb-software.com/TBProAudio/products.html

Synthescience

Conjunto de efectos muy completo, y algún sintetizador "clásico".

http://www.synthescience.com

http://www.vst4free.com/index.php?dev=Synthescience

Melda productions

Melda productions

http://www.meldaproduction.com/freevstplugins/

KarmaFX free effects

KarmaFX free effects

http://karmafx.net/

(en Plugin Pack)

Voxengo Free

Voxengo Free
http://www.voxengo.com/group/free-vst-plugins/

Jeroeen Brebaart

Jeroeen Breebeart

http://www.jeroenbreebaart.com/

(en JB plugins: suite muy completa, antes de pago)

Blue Cat's Audio

Blue Cat's Audio (Freeware bundle)

http://www.bluecataudio.com/Products/Category_0_Freeware/

Variety of Sound

Variety of Sound

https://varietyofsound.wordpress.com/

Kjaerhus Audio

Kjaerhus Audio Classic series

http://www.flstudiomusic.com/2009/09/kjaerhus-audio-classic-series-complete.html

(la web oficial ya no funciona: http://www.kjaerhusaudio.com/ )

TAL Togu Audio Line

TAL Togu Audio Line

http://kunz.corrupt.ch/Products