Webgl/shader stuff is alien to me, so I've started working on an editor for this.
Here's a screen shot of how it currently looks:
The idea I have for this is that besides the main editor (Which is resizeable), you can pop out effects into their own window.
It should also allow for the visualisation to be shown in the page background, or in a window.
And in an ideal world you'll be able to drag & drop avs presets on to the window to load them.
I'll post a link to it when it starts getting usable.
I don't have WebVS running locally because I don't have whatever is used to build it (I assume it's node), so there is no integration with that currently.