There are 2 repositories under winamp-plugins topic.
The Geiss screensaver and Winamp music visualization plug-in
:zap: Archive of software libre related to Winamp, e.g. Winamp plugins
⚡ When Winamp plays a track, this plugin will save the track metadata and album art to files.
List resources needed by Winamp AVS presets
The Restless Winamp Plugin (a.k.a. dsp_restless) of 2005
Windows System Media Transport Controls Interoperability Plug-in for Winamp
The GPL Freeverb Winamp Plugin (a.k.a. dsp_freeverb_gpl) of 2006
The Allmusic Hotkey Winamp Plugin (a.k.a. gen_allmusic) of 2006
The Freeze Winamp Plugin (a.k.a. gen_freeze) of 2006
The Outbridge Winamp Plugin (a.k.a. out_bridge) of 2005/2006
A general purpose Winamp plugin for extracting and broadcasting metadata for currently playing files to 3rd party apps quickly and easily.
Winamp 2 reimplemented for the browser为浏览器重新实现的Winamp 2。