Free VST plugins for professional use

Well, not a mixing technique this time but a very useful entry for many of you I’m sure!

I’ve always been very critical about selecting the best tools for my studio which ensure a seamless mixing and mastering workflow. Through the years I’ve came across several freeware VST plugins and other free audio software too. Here’s a list of the free software I use regularly and which are on par with the most expensive ones:

A very musical sounding HP/LP filter, great for mastering as well:
http://www.brainworx-music.de/en/plugins/bx_cleansweep_v2

One of the best software audio analyzers:
http://www.voxengo.com/product/span/

A general purpose mid-side plugin:
http://www.voxengo.com/product/msed/

My go-to stereo tool and analyzer:
http://www.fluxhome.com/products/freewares/stereotool-v3

A great tool for widening the stereo image:
http://www.voxengo.com/product/stereotouch/

A utility for delaying left/right or mid/side channels:
http://www.voxengo.com/product/sounddelay/

A neat autopanner:
http://www.meldaproduction.com/freevstplugins/mautopan.php

Delay effect with a very good sound:
http://www.e-phonic.com/plugins/retrodelay.php

And finally one of the best sample rate converters available (not a plugin and runs from command line; a short tutorial will follow this entry soon):
http://sox.sourceforge.net/

Free VST plugins for professional use