We tried Sqwiggle for a bit, but honestly didn't take to it very well. Basically it's Slack, Async and Zoom for us these days and it does the trick.
I'd be interested to know why you didn't "take to it"... was it because you were already using other tools that created functionality overlap? Price? Or were there more philosophical reasons like some teammates didn't like the camera being always-on or the ease of interruption?