Tone2 - BiFilter v1.0 beta (free)

Is a high-end quality stereo filter module for VST. It uses a high precision "direct form 2" filter model with a ripple less than 1dB. It supports linear behaviour over the whole frequency range from less than 20 Hz up to 20000 Hz and brilliant, controllable resonance.
Features:

# 28 filter types
# 7 distortion types
# Vocal Filters
# Stereo sound support
# Antialiased distortion
# High performance
# Raytraced GUI
# Freeware!

Technical:

# VST effect plugin
# 22,44,48 or 96 kHz
# Input mono/stereo
# Output stereo
# Windows 9x, XP
# Needs VST host
# Intel or AMD CPU

Distortion types:

# Bypass
# Hard clipping
# Tube amp
# Presence
# Wave wrapping
# Wave shaping
# Bit crushing

Filter types:

# Lowpass 30dB
# Highpass 30dB
# Bandpass 15dB
# Notch
# Fat lowpass octave
# M-Shape
# Dual Formant
# Waldorv Lowpass
# Fat highpass
# Para bandpass
# Equalizer
# Vocals
# Vocal A
# Vocal U
# Vocal E
# Vocal I
# Vocal O
# Phaser
# Low shelf
# High shelf
# Fat lowpass
# Fat lowpass 7th
# Lowpass like
# Highpass like
# Elliptic Lowpass
# Elliptic Highpass
# Peak EQ wide
# Peak EQ tight