SynthEdit is a Modular Synthesiser for Windows XP and Vista.
Advanced Avisynth script editor
Lyrics plugin software, download and display lyrics in iTunes, Winamp, WMP, etc.
truc is a multi-effect VST plug-in, with 4 banks of effects.
A fairly standard waveshaping distortion plugin.
The Finis 3 is a 3-band peak limiter.