Here is a list of VST’s that are all free to download for Mac AND Windows. I have not checked out all of them as of yet, but will do so in the near future and give feedback on my favorite ones. For now though, here is the link on where to get them:

http://mda.smartelectronix.com/effects.htm

And below you can find a list of all the VST’s, just to wet your appetite. You can download them one at a time, to weed out what you might not like, or just get them all at once. Enjoy!

Bandisto – Multi-band distortion
BeatBox – Drum replacer
Combo – Amp & speaker simulator
De-ess – High frequency dynamics processor
Degrade – Sample quality reduction
Delay – Simple stereo delay with feedback tone control
Detune – Simple up/down pitch shifting thickener
Dither – Range of dither types including noise shaping
DubDelay – Delay with feedback saturation and time/pitch modulation
Dynamics – Compressor / Limiter / Gate
Envelope – Envelope follower / VCA
Image – Stereo image adjustment and M-S matrix
Leslie – Rotary speaker simulator
Limiter – Opto-electronic style limiter
Loudness – Equal loudness contours for bass EQ and mix correction
Multiband – Multi-band compressor with M-S processing modes
Overdrive – Soft distortion
Re-Psycho! – Drum loop pitch changer
RezFilter – Resonant filter with LFO and envelope follower
Round Panner – 3D panner
Shepard – Continuously rising/falling tone generator
Splitter – Frequency / level crossover for setting up dynamic processing
Stereo Simulator – Haas delay and comb filtering
Sub-Bass Synthesizer – Several low frequency enhancement methods
Talkbox – High resolution vocoder
TestTone – Signal generator with pink and white noise, impulses and sweeps
Thru-Zero Flanger – Classic tape-flanging simulation
Tracker – Pitch tracking oscillator, or pitch tracking EQ
Vocoder – Switchable 8 or 16 band vocoder
VocInput – Pitch tracking oscillator for generating vocoder carrier input
Combo – Amp & speaker simulator
Degrade – Sample quality reduction
Detune – Simple up/down pitch shifting thickener
DubDelay – Delay with feedback saturation and time/pitch modulation
Dynamics – Compressor / Limiter / Gate
Leslie – Rotary speaker simulator
Re-Psycho! – Drum loop pitch changer
RingMod – Simple ring modulator
RoundPan – 3D panner
Shepard – Continuously rising/falling tone generator
Stereo – Haas delay and comb filtering
SubSynth – Several low frequency enhancement methods
Talkbox – High resolution vocoder
TestTone – Signal generator with pink and white noise, 1/3 octaves and sweeps
Tracker – Pitch tracking oscillator, or pitch tracking EQ