Iconic media player
ASIO output module for winamp media player & SRD file resampler
Fully Customizable Full-Fledged Audio Player Supporting Many Formats
Audio Enhancer for Windows and Embedded Platform
Audio DSP FX and plug-ins, mostly for guitar (amp sim) and other FX
a VST version of radio_chung
An Open Source alternative to SBR (Spectral band replication)
Yet Another (WA)SAPI New Technology (YASAPI/NT) Output for Winamp
FF (mpeg and) SoX Input 2a Winamp Plugin
Faust is a programming language for realtime audio signal processing
"Keep HDD Awake" keeps HDDs not going to sleep while WA is running
Handy LPT port pins manager (also support COM port via USB)
Yet Another Shuffle Plugin for Winamp
Audio plugin bundle over the LV2 standard for Linux
OpenAL output for foobar2000 v1.1+
A remote control MilkDrop2 plugin for Windows
The best DSP available, and even open source.