This is the source repository for the WAM plugins I have written. It is useful to copy my WAMs as starting points for your own plugins, or to modify and open pull requests against the plugins within.
If you just want to use WebAudioModules in your own web project I suggest you start with https://github.com/boourns/wam-community, a prepared package of built WAMs ready for use without any build step.
These are the "stock" WAM plugins for https://sequencer.party, but they all should work on any WAM host (assuming the host implements the required WAM extensions for the plugin).
pianoroll
synth101
drum sampler
spectrum: modal