This page belongs to a guy that makes VSTi and can be downloaded freely.

also:

FreeMusicSoftware.org - A blog by Crispin with the tag line: A collection of the best Free Audio and Music floating around in Cyberspace.

www.gersic.com/plugins/index.php - the giant free audio plugin database

KVRaudio.com - The premier news site for everything related to audio plugins. Fabulous search engine for plugins and host software, which makes it easy to find only free plugins or also commercial one’s.