Yoll's Guitar FX-Box Presets  
   Adds effects such as phaser and distortion, to guitar played through PC.
   http://presets.yoll.net/index.html

Anarchy Sound Software  
   VST 2.0 plugins: AnarchyEffects, AnarchyRhythms and SwarmSynth. Audio samples, demos, purchasing.
   http://www.hypnotoad.co.uk/anarchy/

Anwida Soft  
   VST Plug-ins for Mac and PC. Company profile, products catalog, download and support area.
   http://www.anwida.com/

Freeware VST Plugins Directory  
   Information on freeware VST plugins for Windows, Mac, and Linux.
   http://usitweb.shef.ac.uk/~mup01jrm/vst/vstlinks.htm

Nomad Factory  
   Plug-ins for Cubase, Nuendo, Logic audio, Peak, Deck, sonicWORX, Spark and MOTU.
   http://www.nomadfactory.com

Scuzzphut  
   Free VST plugins, including Scuzzphut6 - a pattern based gate with dual lfo modulated filter delays, and Phutboyslim.
   http://www.djmarko.pwp.blueyonder.co.uk

Super Destroy FX  
   Free plug-ins for both Audio Unit and VST standard protocols. Feature descriptions, screenshots and download area.
   http://www.smartelectronix.com/~destroyfx/index.html

VST Central  
   Searchable list with all the free VST and DirectX plugins for PC and Mac.
   http://www.vstcentral.com/

Jeff Rippe's VST Plugins for PC  
   Loudness maximizer, vox doctor, range expander, saturator.
   http://home.earthlink.net/~rocksonics

DSP-FX Virtual Pack  
   Effects processing, including the DSP·FX high efficiency plug-ins and Power Technology hardware products.
   http://www.dspfx.com

GogoL  
   Audio enhancement plugin for media players like Winamp, Sonique.
   http://gogol.victorovich.com

iZotope Inc.  
   Free and commercial plug-ins for restoring analog feel to digital sound. Relive the grainy sound of old vinyl, the warmth of analog bass.
   http://www.izotope.com

Kelly Industries  
   PanHandler Surround Sound plug-ins for Adobe Premiere, Cubase VST, Cool Edit Pro, SAWPro and DirectX.
   http://www.kellyindustries.com/index.html

Noise Reduction DirectX plug-in  
   For sound restoration, salvaging vinyl recordings, rescuing problem tracks, general audio file cleanup.
   http://www.sonicfoundry.com/noisereduction/

PSP Professional Sound Projects  
   Audio processors and sound effects plug-ins in VST, DirectX, MAS, TDM, RTAS format.
   http://www.PSPaudioware.com/

T-RackS 24  
   Pro Tools plug-in for audio mastering.
   http://www.t-racks.com/

Wave Arts  
   Plug-ins such as reverb and surround, for Mac and PC. Demos available.
   http://www.wavearts.com/

Waves Ltd.  
   Audio signal processing for professional audio and multimedia markets. Product description, screenshots, support area, purchasing information.
   http://www.waves.com/

SFX Machine RT Effects  
   Audio multi-effects plug-in with many presets, available in VST and Audio Unit formats for Windows and Macintosh.
   http://www.sfxmachine.com

ConcreteFX  
   [Win] Company that develops some VST effects: screenshots, main features, demos and audio samples.
   http://www.concretefx.com/Effects.htm

VB-audio.com  
   [Win] Featuring several VST effects. Description, samples, downloadable demos.
   http://perso.wanadoo.fr/vb-audio/

ProSounds  
   VST, DX and AudioUnit audio plugin instruments patches, presets and sounds.
   http://www.pro-sounds.net

Formulator Vocoder Plug-ins  
   Pitch-augmentation, sympathetic drones, voice disguisers, robot voices and talking instruments.
   http://www.vocoder-plugins.com/

Voxengo  
   VSTs include CurveEQ, Tempo Delay, Tube Amp, Stereo Touch, and MarvelEQ.
   http://www.voxengo.com/

FX Freeze  
   Control and optimize CPU usage while working with VST instruments or effects. Screenshots, forum, support area.
   http://www.fxfreeze.com/

Sonic Timeworks  
   Features several effects compatible with DirectX, RTAS and Pulsar-Scope. Description, screeenshots, demos, updates, purchasing information.
   http://www.sonictimeworks.com/

FXpansion.com  
   Convert and share effect plug-ins of different formats between audio sequencers and sound libraries.
   http://www.fxpansion.com/

Drumagog  
   DirectX plug-in that automatically replaces audio drum tracks with other selected samples.
   http://www.drumagog.com/

Thelotron Technologies  
   Developer of the BeatModel T1 Plug-in Pack DirectX audio processing plug-ins.
   http://www.thelotron.com/

Silverspike  
   Includes R2, TapeIt, Reverb.it, RubyTube. Free and commercial VST plug-ins.
   http://www.silverspike.com

Optiloud! Broadcast Sound Processing Plugin  
   Emulates sound of a broadcast processor like Optimod. Uses multiband AGC, limiting, bass management.
   http://xwindow.sourceforge.net/optiloud/

ApulSoft - WormHole  
   [Mac - Win] It allows to transmit streaming audio between two computers over the TCP/IP protocol. Features, downloadable demo, purchasing information.
   http://www.apulsoft.ch/wormhole/index.php

Wusik  
   Featuring Wusikstation VSTi, a sample based virtual instrument for Windows VST hosts. Demo, forum, MP3 examples.
   http://www.wusik.com/

Sonoma Wire Works  
   Sonoma 7 VST effects plug-in, a set of seven optimized effects. Downloadable demo.
   http://www.sonomawireworks.com